Dive into the Depths of Hawaii's Big Island
Discover six exceptional Big Island scuba diving locations for your next underwater adventure. Whether you're a beginner or an experienced diver, this list highlights unique dive sites, from vibrant coral reefs to thrilling night dives with manta rays. Learn about top spots like Kealakekua Bay and the Puna Coast lava tubes, and get inspired to explore Hawaii's incredible marine life. This guide will help you plan unforgettable Big Island scuba diving experiences.
1. Kealakekua Bay
Kealakekua Bay stands out as a premier destination for big island scuba diving, offering a captivating blend of natural beauty, historical significance, and vibrant marine life. This protected marine sanctuary, with its crystal-clear waters and visibility often exceeding 100 feet, provides an unforgettable underwater experience. The bay's vibrant coral reef ecosystem teems with diverse species, making it a paradise for divers of all levels. Adding to its allure is the historical significance of Kealakekua Bay as the site of Captain James Cook's first landing in the Hawaiian Islands in 1778 and, sadly, his death in 1779.
Kealakekua Bay earns its spot on any big island scuba diving list thanks to its exceptional features. Its protected status as a Marine Life Conservation District ensures a thriving underwater environment. Depths averaging 25-40 feet, coupled with remarkable visibility, create ideal diving conditions. Divers can explore pristine coral reef systems and encounter a wealth of marine life, including dolphins, tropical fish, and sea turtles. The presence of the Captain Cook Monument further enriches the diving experience, adding a layer of historical intrigue. Kealakekua Bay is a must-visit spot for divers and snorkelers, particularly those interested in exploring the Captain Cook Monument. For those interested in snorkeling, Captain Cook snorkel tours offer an excellent way to explore the area.
Pros:
- Exceptional water clarity
- Protected marine sanctuary status
- Diverse marine life including dolphins, tropical fish, and sea turtles
- Historical significance
- Suitable for divers of various experience levels
Cons:
- Often crowded with snorkelers and tour boats
- Limited shore entry options
- Requires boat access for optimal diving experience
- Strong currents possible during certain tide conditions
Dive Examples: The Monument Pinnacle dive, beginning at the Captain Cook Monument, follows the reef wall down to depths of 70+ feet, offering a thrilling exploration of the underwater landscape. Dolphin encounters are common during early morning dives, adding a magical touch to the experience.
Tips for Diving Kealakekua Bay:
- Book with a reputable dive operator: Boat access is the best way to fully experience this site and avoid the limited shore entry options.
- Dive in the morning: Morning dives typically offer calmer conditions and enhanced visibility.
- Capture the beauty: Bring an underwater camera to document the colorful reef fish and vibrant coral.
- Respect the environment: Adhere to the marine conservation rules and treat the historical site with reverence.
Learn more about Kealakekua Bay for detailed information on snorkeling tours and other activities in the area. This site offers valuable insights for planning your visit and maximizing your experience at this incredible big island scuba diving location.
2. Manta Ray Night Dive
The Manta Ray Night Dive near Kona is a must-do for any big island scuba diving enthusiast. This experience is considered one of the most unique and spectacular underwater encounters in the world, offering a close-up view of these gentle giants. Divers kneel or sit on the ocean floor in a "campfire" formation, holding dive lights pointed upwards. These lights attract plankton, which in turn draws in the manta rays, some with wingspans reaching up to 16 feet. The mantas perform an elegant underwater ballet, gliding and somersaulting just inches above the divers as they feed on the plankton. This predictable aggregation of manta rays makes this a reliable and awe-inspiring big island scuba diving experience.
This unique dive takes place at either Garden Eel Cove (Manta Ray Village) or Keauhou Bay, typically in depths of 30-40 feet. The dive follows specialized protocols to ensure both the safety of the divers and the well-being of the manta rays. At Garden Eel Cove, divers have reported seeing upwards of 20 mantas in a single dive, creating a truly unforgettable big island scuba diving memory.
Features:
- Occurs at Garden Eel Cove (Manta Ray Village) or Keauhou Bay
- Depth: 30-40 feet
- Night dive experience
- Close encounters with numerous manta rays
- Specialized dive protocols
Pros:
- Once-in-a-lifetime experience
- Predictable manta ray appearances
- Suitable for all certification levels (from beginner Open Water Divers to experienced divers)
- Excellent photo opportunities
- Educational conservation component
Cons:
- Can be crowded with multiple dive groups
- Cold water after sunset may require thicker wetsuits (5mm or 7mm recommended)
- Limited visibility except around dive lights
- Weather-dependent activity
Tips for an Optimal Manta Ray Night Dive:
- Book with reputable operators: Choose operators that follow the Manta Ray Green List practices, demonstrating their commitment to sustainable and responsible tourism.
- Dress warmly: Bring or rent a thicker wetsuit (5mm or 7mm) as the water temperature drops after sunset.
- Respect the mantas: Do not touch the mantas. Oils from human skin can damage their protective coating.
- Secure your gear: Ensure all dive gear is streamlined and secured. Loose items can damage or entangle the mantas.
- Enhance your video: Consider bringing a red-filtered light to record video without disturbing the manta rays or affecting the viewing experience for other divers.
Why this dive deserves its place on the list: The Manta Ray Night Dive provides an unparalleled opportunity for big island scuba diving, allowing divers of all experience levels to witness the magnificence of these creatures up close. The predictable nature of the dive and the sheer number of mantas that gather make it a truly special and memorable experience.
This incredible experience has been popularized by numerous nature documentaries, including the BBC's Blue Planet series. Pioneering dive operators such as Jack's Diving Locker and Big Island Divers have also played a significant role in promoting this unique form of big island scuba diving and educating the public about these graceful creatures. The Manta Pacific Research Foundation provides valuable research and conservation efforts to protect these magnificent animals.
This truly unique big island scuba diving adventure offers a close encounter with one of the ocean's most captivating creatures and is an experience that will stay with you long after you resurface.
3. Black Water Night Dive
For adventurous scuba divers seeking a truly unique and otherworldly experience in the deep blue, a black water night dive off the Big Island is an absolute must. This specialized form of night diving takes you far offshore, suspending you in the pelagic zone – the vast open ocean – above depths of 3,000+ feet. Tethered to a downline from the boat, you'll float in the dark, illuminated only by your dive light, observing the mesmerizing migration of rarely seen deep-sea creatures that ascend to the surface under the cover of night. This type of big island scuba diving offers a glimpse into a hidden world unlike any other.
Black water diving offers an unparalleled opportunity to encounter creatures rarely, if ever, seen on standard reef dives. Imagine witnessing bioluminescent jellyfish pulsating with ethereal light, or the intricate dance of transparent larval fish and pelagic squid. You might even spot unusual deep-water organisms, potentially even species yet to be documented by science. Big island scuba diving experiences don't get much more unique than this.
This unique diving experience isn’t for the faint of heart, however. It requires excellent buoyancy control, as you'll be floating in open water with no bottom or walls for reference. It's also more expensive than typical dives due to the specialized equipment, boat travel, and expertise required. Disorientation can be a challenge for some divers, and the experience is entirely dependent on favorable weather and ocean conditions.
Pros:
- Opportunity to see unique marine life not visible on reef dives
- Photographic opportunities for extremely rare creatures
- Scientific value with possibilities to document undiscovered species
- Small group experience
- Unforgettable and otherworldly experience
Cons:
- Only for advanced divers with excellent buoyancy control
- Relatively expensive compared to standard dives
- Can cause disorientation due to lack of reference points
- Weather and ocean conditions dependent
- Requires specialized equipment and training
Tips for a Successful Black Water Dive:
- Maintain excellent buoyancy control and stay close to your tether line.
- Bring a primary and backup dive light.
- Use a camera with good low-light capabilities and powerful strobes to capture the incredible bioluminescence and unique creatures.
- Choose operators with extensive black water diving experience, like Pelagic Magic Charters, pioneers of this type of diving on the Big Island.
- Consider an orientation dive before attempting this advanced experience.
Learn more about Black Water Night Dive
Pioneered by renowned black water photographer Jeff Milisen, and frequently featured in underwater photography competitions worldwide, this type of big island scuba diving offers an exceptional opportunity to witness the magic of the deep. It's an adventure that earns its place on any serious diver's bucket list, offering a thrilling glimpse into the mysterious depths of the ocean.
4. Two Step (Honaunau Bay)
Two Step at Honaunau Bay is a must-do for anyone considering big island scuba diving. This site, named for the easy-access two-step lava rock entry, offers an incredible blend of vibrant marine life, fascinating underwater terrain, and historical significance. Located adjacent to Pu'uhonua O Hōnaunau National Historical Park (Place of Refuge), the bay’s protected status ensures calm, clear waters ideal for both beginner and experienced divers. Explore the thriving coral reefs, navigate lava tubes, and encounter a resident pod of spinner dolphins, all within a depth range of 10-60 feet. The typical visibility of 50-100+ feet further enhances the diving experience, making it easy to appreciate the rich biodiversity of this unique location.
Two Step offers diverse underwater environments to explore. The 'Amphitheater,' a shallow sandy area encircled by coral formations, is perfect for beginners and those seeking a relaxed dive. More experienced divers can venture to the 'Drop-off' along the southern edge, where the reef slopes down to greater depths, offering the chance to encounter larger pelagic species. The protected bay generally offers calm conditions suitable for most skill levels, however, understanding the site’s specific entry and potential crowds is crucial. Learn more about Two Step (Honaunau Bay) to better plan your dive.
Pros:
- No boat required – excellent shore diving
- Free access (parking fee for adjacent national park)
- Suitable for beginners and experienced divers
- Protected from waves in most conditions
- Multiple dive routes and environments in one location
Cons:
- Can be extremely crowded, especially midday
- Limited parking
- Entry requires navigating slippery lava rock
- Some boat traffic in the bay
Tips for Diving Two Step:
- Arrive early (before 8am): Secure parking and beat the crowds, especially on weekends and holidays.
- Protective footwear: Wear water shoes or booties until you reach the water's edge to protect your feet from the sharp lava rock.
- Use the 'two step' entry: Place your gear on the rocks, step down to the lower level, then slip smoothly into the water. This minimizes strain and the risk of slipping.
- Dolphin etiquette: Spinner dolphins frequent the bay, particularly in the morning. Observe them respectfully from a distance and avoid approaching or interacting with them.
- Rinse gear thoroughly: There are no shower facilities at the site, so bring fresh water to rinse your gear after diving to prevent salt buildup.
Two Step's accessibility, combined with its diverse marine life and unique underwater landscape, makes it a standout choice for big island scuba diving. Its proximity to a significant historical site adds another layer of interest. Whether you're a seasoned diver or a curious beginner, Two Step offers a rewarding and memorable experience. From families seeking a safe snorkeling spot to underwater photographers looking for stunning subjects, Two Step caters to a wide range of ocean enthusiasts.
5. Crescent Beach (Kamakahonu Beach)
Crescent Beach, also known as Kamakahonu Beach, is a jewel in the crown of Big Island scuba diving. Situated in the heart of Kailua-Kona directly in front of the King Kamehameha Hotel, this site offers an incredibly convenient and accessible entry point into a surprisingly biodiverse underwater world. Its protected cove, artificial reef, and historical significance make it a truly unique spot for both beginners and experienced divers exploring the Big Island's underwater wonders. Learn more about Crescent Beach (Kamakahonu Beach)
This easily accessible site is more than just convenient; it’s a fantastic example of how a small, protected area can foster a thriving ecosystem. The artificial reef elements within the cove create a haven for a multitude of fish species, making it an excellent location for underwater photography practice and observation. While the 'Atlantis Submarine' regularly visits the outer reef, providing a unique underwater encounter, the remnants of the old Kona Pier provide additional structure that attracts even more marine life, further bolstering the biodiversity in this urban setting. This rich marine life makes it a rewarding dive for those focused on observing Hawaii’s underwater world.
Features:
- Easy shore entry in a protected cove
- Depth: 10-50 feet
- Artificial reef elements
- Historic location (former residence of King Kamehameha I)
- High marine biodiversity despite urban location
- Convenient downtown Kona location
Pros:
- Perfect for beginners and certification dives
- Very easy shore access with minimal swim to the dive site
- Protected from waves in most conditions
- Amenities nearby including restaurants and dive shops
- Parking and facilities available
- Excellent night diving option with minimal current
Cons:
- Limited scope for exploration compared to larger Big Island scuba diving sites
- Urban setting with some debris on the bottom
- Can become crowded with dive classes, particularly during peak season
- Limited visibility during high tide or after rainfall
Tips for Diving Crescent Beach:
- Ideal site for equipment testing or check-out dives before venturing out on boat dives.
- Great for night diving with minimal navigation challenges.
- Access the beach next to the King Kamehameha Hotel.
- Respect the historical significance of the area, which was a royal residence.
- Perfect site for underwater photography practice with plenty of willing reef fish subjects.
Crescent Beach deserves its spot on this list because it provides a convenient and rewarding Big Island scuba diving experience for divers of all levels. While beginners can enjoy the calm, protected environment for their first underwater breaths, more seasoned divers can appreciate the unique blend of history, biodiversity, and easy access. Whether you're looking for a quick dive before dinner, a night dive teeming with life, or a convenient spot for a check-out dive, Crescent Beach offers a memorable experience within the bustling heart of Kailua-Kona.
6. Lava Tube Diving (Puna Coast)
For a truly unique big island scuba diving adventure, the lava tubes along the Puna Coast offer an otherworldly experience unlike any other. These underwater caverns and tunnels were created by flowing lava that cooled and solidified on the outside while molten rock continued to flow within. Once the molten lava drained out, these hollow tubes were left behind and eventually filled with seawater, creating a fascinating underwater playground for divers.
This type of diving lets you explore a unique geological formation, providing a dramatic contrast to typical reef dives. Light filters through cracks and openings in the lava tube ceilings, creating spectacular light beams and an ethereal atmosphere. You'll encounter unique volcanic formations and specialized marine ecosystems that thrive in this dark environment. Features include intricate cave and cavern systems at depths ranging from 30-80 feet, with multiple entry and exit points often available within a single dive site.
Learn more about Lava Tube Diving (Puna Coast)
Examples of popular lava tube dive sites include Paradise Caves near Kapoho, known for its interconnected lava tubes with numerous exit points, and Puna Tubes, famous for dramatic light rays shining through ceiling openings called 'skylights'.
Pros:
- Unique geological diving experience
- Dramatic light effects not found on conventional reef dives
- Less crowded than Kona dive sites
- Opportunities for advanced diving techniques
- Incredible photographic opportunities with natural lighting
Cons:
- Requires advanced certification and often cave/cavern specialty training
- Limited visibility if sediment is disturbed
- Rougher ocean conditions on the east side of the island
- Fewer dive operators service these sites
- Potential overhead environment dangers
Tips for Lava Tube Diving:
- Training is Essential: Only attempt lava tube diving with proper training, including advanced open water and ideally cave/cavern specialty certifications. Always dive with a knowledgeable local guide familiar with the specific site.
- Buoyancy Control: Maintaining excellent buoyancy control is crucial to avoid stirring up sediment and reducing visibility.
- Lights: Carry a primary dive light and a reliable backup light. The inside of the tubes can be very dark.
- Air Management: Follow the rule of thirds for air management to ensure a safe return to your exit point.
- Specialized Training: Consider taking a specialized lava tube diving course with local operators to gain the skills and knowledge specific to this type of diving.
Lava tube diving earns its place on this list of big island scuba diving experiences because of its unique and adventurous nature. It offers seasoned divers an opportunity to explore a different kind of underwater world, one sculpted by volcanic activity and offering an unforgettable blend of geology, light, and marine life. It's a truly special experience for those seeking adventure and something beyond the typical reef dive. This type of diving appeals to advanced divers, underwater photographers, and anyone seeking a truly unique and unforgettable underwater experience. While not suitable for beginners, experienced divers with the right training will find this a rewarding addition to their diving logbook.
Top 6 Big Island Dive Spots Compared
| Dive Site / Tip | 🔄 Implementation Complexity | 🛠️ Resource Requirements | 📊 Expected Outcomes | 💡 Ideal Use Cases | ⭐ Key Advantages |
|---|---|---|---|---|---|
| Kealakekua Bay | Moderate: boat access required; currents possible | Boat, experienced operator, underwater camera | Clear visibility, diverse marine life, historical | All experience levels; marine life & history | Pristine coral reefs, historical significance |
| Manta Ray Night Dive | Moderate: night dive protocols, predictable patterns | Night dive gear, wetsuit, specialized lights | Close manta encounters, excellent photo ops | Night diving, unique wildlife experience | Spectacular manta ray viewing, educational |
| Black Water Night Dive | High: advanced skills, tethering, deep open ocean | Advanced certification, specialized lights, training | Rare pelagic species, scientific/photo value | Advanced divers, rare marine life documentation | Unique deep-sea creatures, small group experience |
| Two Step (Honaunau Bay) | Low: shore entry; entry on lava rock can be tricky | Basic shore diving gear, protective footwear | Calm protected waters, diverse marine habitats | Shore diving, beginners to advanced | Easy access, multiple dive environments |
| Crescent Beach | Low: easy shore entry in protected cove | Basic shore gear, nearby facilities | Suitable for beginners, urban dive training | Beginners, training dives, convenient location | Easy access, nearby amenities, protected cove |
| Lava Tube Diving (Puna Coast) | High: advanced cave/cavern diving training needed | Cave certification, backup lights, local guide | Unique geological formations, specialized marine life | Advanced divers, geological exploration | Dramatic lava caves, photographic light effects |
Planning Your Big Island Diving Adventure
From the vibrant coral gardens of Kealakekua Bay and the magical manta ray night dives to the otherworldly experience of black water diving and exploring lava tubes along the Puna Coast, Big Island scuba diving offers an unmatched variety of underwater adventures. Whether you're a seasoned diver seeking thrilling new challenges, a beginner looking to get certified, or simply an ocean enthusiast eager to witness Hawaii’s incredible marine life, this island paradise has something for everyone. Remember that choosing the right dive site and operator significantly impacts your experience. Prioritizing safety, responsible diving practices, and respect for the marine environment ensures both an unforgettable adventure and the preservation of these precious ecosystems for generations to come. Mastering these concepts will not only enhance your diving experience but also contribute to the sustainability of Big Island scuba diving. So, take the plunge and explore the underwater wonders that await – your Big Island scuba diving adventure is just a breath away!
Ready to experience the best of Big Island scuba diving? Kona Honu Divers offers exceptional guided dives, ensuring a safe and memorable exploration of these incredible sites. Visit Kona Honu Divers to book your next underwater adventure and discover the magic of Hawaii’s marine world.