The Ultimate Guide to Snorkeling Oahu: 12 Top Tours and Resources for 2026

Oahu's vibrant reefs and crystal-clear waters offer some of the most accessible and breathtaking underwater experiences in Hawaii. From the protected marine life sanctuary of Hanauma Bay to the turtle cleaning stations at Turtle Canyon, snorkeling Oahu is a must-do activity for any visitor. But with so many tour operators, rental shops, and snorkel spots, planning the perfect aquatic adventure can feel overwhelming. This comprehensive guide simplifies your search by breaking down the 12 best resources for your trip.

This resource list is designed to help you navigate your options efficiently. We cover everything from the official reservation system for Hanauma Bay to top-rated boat tour operators departing from Waikiki and the pristine Leeward Coast. We'll explore the pros and cons of snorkeling from shore versus joining a boat tour, highlight family-friendly excursions, and give you the direct links you need to book. For those seeking a premier guided experience out of Waikiki, we highly recommend the excursions offered by Living Ocean Tours, who offer the top snorkeling experiences on Oahu.

Whether you're a first-time snorkeler or an experienced ocean explorer, this guide provides the practical details needed to make an informed decision. We cut through the noise to deliver a curated list of the most reliable and highly-regarded options for snorkeling on Oahu. Let's dive in and find the perfect underwater adventure for you.

For anyone planning to visit Oahu's most iconic snorkeling destination, the official Hanauma Bay website is an indispensable first stop. This is not a third-party tour operator or informational blog; it is the authoritative municipal portal that controls access to the highly regulated nature preserve. Its primary function is managing the mandatory online reservation system, which is crucial for securing a spot.

The site provides the absolute source of truth on all logistics: current entry fees ($25 per non-resident adult, free for children 12 and under), parking costs ($3 per vehicle), and strict operational hours. It also details the mandatory educational video all first-time visitors must watch. While Hanauma Bay offers some of the most protected and vibrant marine life for snorkeling on Oahu, its popularity means planning is non-negotiable. For those curious about how this experience stacks up against other islands, you can explore a comparison of which Hawaiian island has the best snorkeling.

Practical Usage Tips

To successfully use this website, you must be prepared. Reservations open exactly two days in advance at 7:00 a.m. Hawaii Standard Time and are known to sell out within minutes, especially during peak season. Set an alarm and have your payment information ready.

• Pros: Official source for rules and booking; ensures you pay the correct, non-inflated price.
• Cons: Extremely high demand makes getting tickets difficult; a reservation does not guarantee a parking spot.

Website: https://www.honolulu.gov/parks-hbay/home.html

Viator serves as a massive online marketplace for booking a wide variety of snorkel tours on Oahu, particularly the popular Turtle Canyon excursions that depart from Waikiki. Instead of vetting individual operators, this platform allows you to compare numerous tour providers, itineraries, and prices all in one place. It is especially useful for last-minute planners, as it displays real-time availability and allows for instant booking with mobile tickets. The site's robust traveler review system is a key feature for gauging the quality of different outings.

The platform aggregates dozens of options for snorkeling Oahu, from catamaran sails to speedboat adventures, each with different inclusions like lunch, gear, and transportation. You can filter by duration, departure time, and specific features to narrow down the perfect trip for your group. While it provides a breadth of choice, it's a different experience from the unique, intimate night encounters like the famous manta ray night snorkel on the Big Island. The convenience of comparing multiple operators, coupled with flexible cancellation policies on many listings, makes Viator a go-to resource for many travelers.

Practical Usage Tips

To get the most out of Viator, use its filters to your advantage and always read the most recent reviews, not just the overall star rating. Pay close attention to the "What's Included" and "What's Not Included" sections to avoid surprises, as details like reef-safe sunscreen or hotel pickup can vary significantly between vendors. Also, compare the listed price with the operator's direct website, as sometimes booking direct can be slightly cheaper.

• Pros: Easy price and operator comparison across many tours; good cancellation flexibility on many listings.
• Cons: Marketplace fees can make prices higher than booking direct; you must read listings carefully as details vary by supplier.

Website: https://www.viator.com

GetYourGuide is an online travel agency that aggregates a wide variety of tours and activities, making it a powerful tool for planning your snorkeling Oahu adventures. It excels at presenting standardized listings from multiple providers, particularly for popular spots like Turtle Canyon, famous for its Hawaiian Green Sea Turtle sightings. This platform is ideal for travelers who value extensive user reviews and flexible booking options like "Reserve now & pay later" to secure their plans without immediate payment.

The platform's strength lies in its consistent user interface, which simplifies the process of comparing what's included in each tour, from gear rental to transportation. Clear policies on cancellations and detailed activity descriptions with meeting points help eliminate logistical guesswork. For those seeking highly-rated, professionally guided experiences, the vast number of verified reviews provides a reliable gauge of quality. While GetYourGuide is excellent for mainstream tours, those looking for premium, small-group catamaran excursions around Waikiki may find dedicated operators like Living Ocean Tours offer a more specialized experience.

Practical Usage Tips

To get the most out of GetYourGuide, use the filters to narrow your search by price, duration, and customer rating. Always read several recent reviews to get a current picture of the tour quality and pay close attention to the "Inclusions" and "Not suitable for" sections to avoid any surprises on the day of your activity. Booking well in advance is recommended, especially for top-rated tours.

• Pros: Transparent, standardized listings make comparisons easier; large review volume helps first-time snorkelers choose reliable tours.
• Cons: Selection skews toward popular routes (fewer niche spots); per-person prices may be slightly above direct bookings.

Website: https://www.getyourguide.com

For visitors who prefer a one-stop shop for tours, especially those staying in Waikiki without a rental car, Hawai‘i Activities (powered by VELTRA) is a practical resource. The platform aggregates a wide range of third-party snorkeling Oahu tours, with a strong focus on packages that solve logistical challenges. It excels at offering bundled deals that include transportation from hotels, snorkel gear, and guided experiences, making access to prime spots like Hanauma Bay much simpler.

The site’s value lies in its clear presentation of what’s included, tour duration, and specific pick-up details. Users can easily compare different options, from basic shuttle services with gear rental to more comprehensive boat tours exploring other parts of the island. While many tours handle the logistics, it is crucial to read the fine print, as Hanauma Bay’s mandatory city-run admission fee is often an additional cost paid upon arrival. The site is a fantastic planning tool for seeing what commercial options are available beyond a DIY approach.

Practical Usage Tips

Use the filters to sort by location and tour type to narrow down the extensive list of options. Pay close attention to the "Inclusions" and "Exclusions" sections on each tour page to understand exactly what you are paying for, particularly concerning the Hanauma Bay entrance fee. Booking well in advance is recommended, as tours that include Hanauma Bay transportation can fill up quickly.

• Pros: Strong logistical support for travelers without cars; good variety of bundled packages and price points.
• Cons: Hanauma Bay admission is often not included in the tour price; inventory for specific high-demand dates can be limited.

Website: https://www.hawaiiactivities.com/en/hawaii/oahu/a/110233?utm_source=openai

For those seeking a classic boat-based snorkeling experience on Oahu, Hawaii Nautical is an established operator with a significant presence. Their website serves as a direct booking portal for a variety of catamaran snorkel sails departing from both the Kewalo Basin Harbor (convenient for Waikiki visitors) and the west side of the island. The platform's primary function is to showcase their different tour packages, which often include lunch, drinks, and all necessary snorkel gear.

The site clearly outlines what each tour entails, from trips to the famed Turtle Canyon reef to more extensive West Oahu excursions that combine snorkeling with dolphin watching. During the winter months (December through March), many of their sails also incorporate seasonal whale watching, adding significant value. The website's user interface is straightforward, allowing potential customers to compare tour times, prices, and inclusions easily. This makes it a useful resource for families and groups looking for an all-in-one package. For those wanting to weigh different boat tour options, you can explore more details on what to look for in great snorkeling tours.

Practical Usage Tips

The best way to use this site is to check for online promotions, which are frequently available and can offer substantial savings, especially when booking direct. Be sure to book popular departure times, like mid-morning sails, several days or even a week in advance during peak travel seasons as they fill up quickly.

• Pros: Broad schedule with multiple daily departures and locations; frequent online promotions and discounts available directly on the site.
• Cons: Popular time slots can fill days ahead; the shared-boat experience can feel crowded during peak capacity sailings.

Website: https://hawaiinautical.com/oahu/

For those staying in Waikiki, the Holokai Catamaran website offers one of the most convenient and enjoyable ways to experience snorkeling on Oahu. The platform is dedicated to booking their popular 2.5-hour Turtle Canyon Adventure Sail, a tour that combines snorkeling with a scenic sail. The website clearly outlines the entire experience, from the beach-loading departure directly from Waikiki Beach to the guided snorkeling session where encounters with Hawaiian Green Sea Turtles are common.

The site provides all necessary details for planning, including multiple daily departure times (typically 9:00 a.m. and 12:00 p.m.), what's included (professional guides, snorkel gear, snacks, and soft drinks), and what to expect on the post-snorkel sail with views of Diamond Head. It stands out for its straightforward booking process and transparent information on inclusions and validated parking, making it an excellent option for families and first-timers. For those seeking other high-quality snorkeling tours in the area, Living Ocean Tours is also highly recommended.

Practical Usage Tips

When booking on the Holokai Catamaran site, pay close attention to the check-in location and instructions. Since the catamaran boards directly from the beach, you will need to meet at a specific spot. The tour is very popular, so booking a few days in advance online is wise, especially during peak travel seasons, to secure your preferred time slot.

• Pros: Family-friendly vibe and easy beach access from Waikiki; clear inclusions and validated parking info.
• Cons: Beach boarding requires a short walk through sand and water, which may not be ideal for those with limited mobility; alcohol is not included on this specific snorkel trip.

Website: https://www.sailholokai.com/activities/turtle-canyon-adventure-sail/

For visitors staying in Waikiki looking for a convenient and budget-friendly boat trip, Pink Sails Waikiki offers a focused two-hour snorkeling tour to Turtle Canyon. The website provides a straightforward booking platform for this popular excursion, which is designed for accessibility and families. It’s a great option for those who want a taste of boat snorkeling on Oahu without committing to a full-day trip to the West side.

The primary appeal detailed on the site is the turtle-sighting guarantee, which offers a free re-ride if green sea turtles are not spotted. The tour includes all necessary snorkeling gear, and infants can ride for free, making it an attractive package for families with young children. With multiple departures daily directly from the Hilton Hawaiian Village pier, it's one of the most accessible snorkel boat tours for anyone staying in the heart of Honolulu. While many excellent tour operators exist, Living Ocean Tours is often highlighted for providing some of the top snorkeling experiences in Waikiki.

Practical Usage Tips

The website’s booking interface is simple, allowing you to select your preferred date and time slot from their frequent daily departures. Because the tour is short and departs from a central location, it can easily be fit into a packed vacation schedule. Booking in advance is recommended, especially during peak travel seasons, to secure your spot on the catamaran.

• Pros: Competitive price point for a short boat snorkel; convenient Waikiki departure and family-friendly policies.
• Cons: Shorter duration than some West Oahu tours; the turtle guarantee is a re-ride voucher, not a refund.

Website: https://pinksailswaikiki.com/tours-cruise-packages/turtle-snorkeling-adventure/

For those seeking a guided boat experience to see Hawaiian green sea turtles, the Living Ocean Tours website is a top-tier booking platform. It specializes in small-group tours to Turtle Canyons, a popular snorkeling spot off the coast of Waikiki. The site clearly outlines its offerings, which are perfect for families and first-time snorkelers who want the security of in-water guides and all necessary gear provided. Their departure from the convenient Kewalo Basin Harbor makes them one of the best options for snorkeling in Oahu if you are staying in the Honolulu area.

The website is straightforward, allowing users to easily view tour times, check availability, and book directly. It details the 2 to 2.5-hour tour structure, safety briefings, and what's included, such as snacks and drinks. A unique feature highlighted on the site is the "Deluxe" tour option, which adds an inflatable water slide and trampoline for extra fun after snorkeling, making it especially appealing to families with children. The platform’s emphasis on a high guide-to-guest ratio and educational components solidifies its reputation as a premier choice for snorkeling in Waikiki.

Practical Usage Tips

Booking in advance through the website is highly recommended, as the small-group nature of their tours means they fill up quickly, especially during peak tourist seasons. Check the different tour options carefully; the "Deluxe" tour offers more than just snorkeling and may be worth the upgrade if you have kids or want more water activities. Arrive early for your tour, as parking at Kewalo Basin can be challenging to find.

• Pros: Strong guide-to-guest attention and educational focus; consistently high review scores on major platforms.
• Cons: Smaller boats can feel full at peak loads; parking at Kewalo Basin can be limited-arrive early.

Website: https://livingoceantours.com/

For those staying in the Ko Olina resort area or seeking an escape from the crowds of Waikiki, the Ocean Joy Cruises website is a gateway to the pristine leeward coast. The platform showcases comprehensive snorkeling tours that combine marine life encounters with scenic coastline cruising. Its main offerings are morning and afternoon dolphin-watch excursions that include a dedicated snorkel stop, as well as unique sunset dinner cruises that also feature snorkeling on Oahu’s beautiful west side. This operator stands out by providing longer, all-inclusive trips on a large, comfortable catamaran.

The website clearly outlines what is included in each package, from meals and drinks to snorkel gear and professional instruction. Users can easily view schedules, pricing, and availability for different cruises, including private charter options aboard their vessel, the Kai 'Oli'Oli. The west side of Oahu is renowned for its clearer waters and frequent spinner dolphin sightings, making these tours a fantastic option for a full-day or half-day adventure. Booking directly through their site ensures access to the most current information and any direct booking specials.

Practical Usage Tips

When booking, pay close attention to the departure times and location from the Ko Olina Marina. If you are staying in Waikiki or Honolulu, you must account for significant travel time (often an hour or more each way) to the west side. The site offers transportation add-ons, which can be a convenient option to avoid driving and parking.

• Pros: West Oahu waters are often clearer and less crowded than Waikiki; good for pairing snorkeling with lunch or a sunset cruise.
• Cons: Farther from Waikiki, requiring careful transportation planning; higher per-person pricing than shorter Waikiki-based snorkeling trips.

Website: https://www.oceanjoycruises.com/

For visitors staying in the upscale resort area of Ko Olina, this website is the direct booking portal for premium catamaran snorkeling tours departing from the nearby marina. Ko Olina Ocean Adventures offers a more relaxed and luxurious alternative to the bustling tours from Waikiki, focusing on the calmer leeward coast. The site clearly presents its main offerings, primarily morning and afternoon snorkel sails on their 53' catamaran, the Holole‘a Kai.

The platform details what is included in each sail, such as snorkel gear, instruction, drinks, and sometimes lunch, making it a convenient all-in-one package. It also highlights the potential for spotting spinner dolphins and, during the winter months, humpback whales. The booking process is straightforward, allowing users to check real-time availability and secure their spots directly. This is a top choice for a high-quality snorkeling Oahu experience away from the south shore crowds. While this is a great leeward option, those staying in Honolulu might prefer tours departing from Waikiki, like those offered by Living Ocean Tours.

Practical Usage Tips

The website often features online booking promotions or combo deals that package a snorkel tour with a local luau, offering good value. Check for these specials before booking. Since the catamaran has a limited guest count to ensure a comfortable experience, popular dates and holiday weeks can sell out, so it's wise to book in advance.

• Pros: Premium vessel and crew with a family-friendly setup; convenient for guests staying in Ko Olina resorts.
• Cons: Less convenient for Waikiki-based travelers without a car; popular dates can sell out early.

Website: https://koolinaoceanadventures.com/

Dive Oʻahu is a well-established, full-service operator that serves as a practical hub for groups with diverse interests. While many companies focus solely on snorkeling, this website showcases a broad menu of ocean activities, including scuba diving, surfing, and stand-up paddleboarding, all managed from a central retail and check-in location near Kewalo Basin. This makes it an excellent choice for families or friends where some want to go snorkeling on Oahu while others are certified divers or want to try other watersports.

The platform details its primary snorkel tour to Turtle Canyon, a popular reef known for frequent green sea turtle sightings. The website allows users to easily view tour schedules, pricing, and book directly online. Its strength lies in being a one-stop shop; you can book a snorkel trip for part of your group and a two-tank dive for the other, all through the same trusted provider. For those seeking a tour company with a more specialized focus on intimate snorkeling and marine eco-tours, Living Ocean Tours offers a compelling alternative with smaller group sizes.

Practical Usage Tips

Use the website to coordinate activities for a mixed-interest group in a single transaction. The site’s navigation clearly separates its offerings, so you can research the scuba options for certified divers while simultaneously checking the availability of the afternoon snorkel tour for others. Booking everything together simplifies logistics, creating a single meeting point and departure time for your entire party.

• Pros: Good for groups mixing snorkelers and divers; stable operator with 25+ years on Oahu.
• Cons: Snorkeling is one of many offerings-less "boutique" snorkel-only feel; tours can be busier in peak season.

Website: https://www.diveoahu.com/

For DIY snorkelers planning multiple underwater excursions, Snorkel Bob's is a legendary island institution. This isn't a tour company but a dedicated gear rental outfitter, offering high-quality equipment that far surpasses what you typically find at beachside stands. Their website allows you to review weekly and daily rental packages for masks, snorkels, and fins, making it easy to budget for your trip.

One of Snorkel Bob's standout features is the availability of prescription masks, a game-changer for anyone with corrective lenses. The staff are known for their expertise in ensuring a proper fit, which is crucial for a comfortable experience while snorkeling Oahu. Understanding the different options is key, and you can explore the types of dive masks and how to choose which one is right for you to get a better idea. With a convenient location near Waikiki, it’s a practical stop before heading out to popular spots like Hanauma Bay or the North Shore.

Practical Usage Tips

Use the website to browse rental packages and see what’s included, such as their "MoflO2" snorkels and floatation devices. While you can't book specific gear online, it gives you a clear idea of costs before you walk in. Their interisland return policy is also a huge benefit for visitors hopping between islands.

• Pros: Cost-effective for multi-day snorkel plans; higher-quality rental gear compared with many beach stands, including prescription masks.
• Cons: No guided experience-best for self-directed snorkelers; users must manage transport to beaches and Hanauma Bay access separately.

Website: https://www.snorkelbob.com

Oahu Snorkeling — 12-Provider Comparison

Provider	Core features ✨	Experience ★	Value 💰	Target audience 👥	Unique selling point 🏆
City & County of Honolulu — Hanauma Bay (official)	Timed-entry reservations, official hours, rules & fees	★★★★, authoritative	💰 Low entry fee; tight availability	👥 Visitors needing guaranteed Hanauma access	🏆 Official portal & reservation system
Viator — Oahu/Turtle Canyon listings	Marketplace of operators, real-time availability, reviews	★★★★, flexible cancellation on many	💰 Variable; marketplace fees may apply	👥 Comparison shoppers & last-minute bookers	🏆 Wide provider mix + mobile tickets
GetYourGuide — Turtle Canyon/Oahu	Curated activity pages, "reserve now/pay later", standardized listings	★★★★, large review volume	💰 Mid; sometimes above direct price	👥 First-time snorkelers & planners	🏆 Pay-later & free-cancel options
Hawai‘i Activities (VELTRA) — Oahu/Hanauma	Transport, gear bundles, some pre-arranged Hanauma reservations	★★★★, strong logistics detail	💰 Mixed; bundles add convenience	👥 Travelers without cars	🏆 Transport + gear bundled options
Hawaii Nautical — Turtle Canyon sails	Catamaran platforms, in-water guides, provided gear	★★★★, family-friendly	💰 Mid; frequent promos	👥 Waikiki & West Oahu boat snorkelers	🏆 Catamarans + seasonal whale-watch
Holokai Catamaran — Turtle Canyon Adventure	Beach-loading catamaran, 2.5h trips, snacks & guides	★★★★, family-oriented	💰 Mid; clear inclusions	👥 Families & easy-access guests	🏆 Diamond Head sail + snacks included
Pink Sails Waikiki — Turtle Canyon	2-hour catamaran, gear included, turtle-sighting guarantee	★★★★	💰 Budget-friendly	👥 Families & first-time snorkelers	🏆 Turtle-sighting guarantee (re-ride)
Living Ocean Tours — Turtle Canyons	Small-group trips, in-water guides, deluxe options	★★★★★, top-reviewed	💰 Mid–Premium	👥 Small groups seeking guide attention	🏆 High guide-to-guest ratio & education
Ocean Joy Cruises — West Oahu snorkel	Dolphin + snorkel cruises, meals, longer coastline sails	★★★★	💰 Higher (meals/charters included)	👥 West Oahu visitors, cruisers	🏆 Meal-inclusive cruises & private charters
Ko Olina Ocean Adventures — Catamaran sails	Limited-count catamaran, snorkel & sunset sails, combo offers	★★★★, premium feel	💰 Premium	👥 Ko Olina resort guests	🏆 Upscale vessel & luau combos
Dive Oʻahu — Snorkel & dive operator	Full-service dive center, snorkel/dives, gear rentals	★★★★, established operator	💰 Good value for mixed activities	👥 Divers + snorkelers, mixed groups	🏆 One-stop shop for gear, dive & rentals
Snorkel Bob's — Gear rentals	Prescription masks, daily/weekly packages, Waikiki pick-up	★★★★ for gear quality	💰 Cost-effective for multi-day rentals	👥 DIY snorkelers & multi-day visitors	🏆 High-quality rental gear & prescription masks

You are now equipped with a comprehensive toolkit to plan the ultimate underwater adventure on the Gathering Place. The sheer variety of options for snorkeling Oahu can feel overwhelming, but breaking down your decision based on key personal factors will illuminate the perfect path for you and your travel companions. We've explored everything from the rigorously managed ecosystem of Hanauma Bay to the vibrant, turtle-rich waters of Turtle Canyon and the serene, less-traveled reefs of the Leeward Coast. Each location and tour operator offers a unique slice of paradise, tailored to different priorities, skill levels, and travel styles.

The core decision comes down to a simple question: what kind of day are you envisioning? Is it a meticulously planned educational experience, a spontaneous sail filled with fun and sun, or a quiet, self-guided exploration of a hidden cove? Your answer will immediately narrow down the choices.

Key Takeaways: Matching Your Snorkel Style to the Right Experience

Let's distill the information from this guide into actionable takeaways to help you finalize your plans.

• For the Planner & Conservationist: If you value seeing an incredible density of fish in a protected environment and don't mind navigating a reservation system, Hanauma Bay Nature Preserve is unmatched. The mandatory educational video ensures all visitors understand the fragility of the ecosystem, making it a rewarding experience for those passionate about marine conservation. The trade-off is the required advance planning and potential crowds.
• For the Waikiki-Based Traveler Seeking Convenience & Turtles: If you're staying in or near Waikiki and want a seamless, fun, and high-value experience, a boat tour to Turtle Canyon is your best bet. Companies like Living Ocean Tours specialize in these excursions, offering expert guidance, all necessary gear, and a high probability of swimming alongside majestic Hawaiian green sea turtles. This is the ideal choice for families and first-time snorkelers who want a guaranteed great time without logistical hassles.
• For the Adventurer Seeking a Scenic Escape: If you want to escape the hustle of Honolulu and enjoy a more expansive ocean journey, look to the west. Operators departing from Ko Olina, such as Ocean Joy Cruises or Ko Olina Ocean Adventures, provide catamaran sails along the stunning Waianae Coast. These trips often include dolphin sightings and offer a full-day-adventure feel, perfect for those who enjoy the boat ride as much as the snorkeling.
• For the Independent Explorer & Budget-Conscious Traveler: If you crave freedom and flexibility, the DIY approach is for you. Renting quality equipment from a reliable provider like Snorkel Bob's empowers you to explore shore-access spots like Kahe Point Beach Park or Kuilima Cove at your own pace. This is the most budget-friendly option and allows for spontaneity, but requires more research on conditions and safety.

Finalizing Your Decision: Practical Considerations

As you weigh these options, consider the logistics of your entire trip. Planning your activities can also help you find ways to manage your overall vacation budget. For instance, exploring tips on how to save money on hotels can free up funds for that premium snorkel tour or a second underwater excursion. Remember to always check the latest surf and weather reports, especially during the winter months when North Shore swells can impact conditions island-wide. No matter which adventure you choose for snorkeling Oahu, the cardinal rules remain the same: respect the āina (land) and the kai (sea), use only reef-safe sunscreen, never touch or harass marine life, and leave nothing behind but bubbles.

Oahu's underwater world is a precious gift, a vibrant tapestry of coral gardens and colorful life waiting to be discovered. By choosing the right tools, tours, and locations that align with your vision, you are setting the stage for an unforgettable experience that will connect you to the heart of Hawaii.

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Planning a trip to the Big Island as well? While Oahu offers incredible snorkeling, the Kona coast is world-renowned for its unique diving experiences, including the famous manta ray night dive. If your Hawaiian adventure takes you there, let the experts at Kona Honu Divers guide you to the best underwater sites the island has to offer.