Hanauma Bay Snorkeling
Duration
2 – 4 hours
Distance
10 Miles from Waikīkī
Included
Snorkel Gear & Marine Education
The Experience
Hanauma Bay Nature Preserve is one of the most spectacular marine sanctuaries in the entire Pacific — a crescent-shaped volcanic crater on Oʻahu's southeast shore where the ocean has carved a perfect natural bay filled with thriving coral reefs and an astonishing diversity of marine life. Formed over 32,000 years ago from a collapsed volcanic cone, Hanauma Bay has been a protected marine life conservation area since 1967, giving its ecosystem decades to flourish undisturbed. Today it's home to more than 400 species of fish — the largest variety in Hawaiʻi — along with Hawaiian green sea turtles (honu), spinner dolphins, and rich hard and soft corals. The water is shallow near shore (3–10 feet) making it ideal for beginners, with deeper sections (up to 70 feet at the bay's mouth) offering more advanced snorkelers a chance to explore the outer reef. Before entering the water, all visitors are required to watch a short marine education video about the bay's conservation history and rules — a reminder that you're entering a living sanctuary, not a theme park. Hanauma Bay is one of those rare places that makes you feel simultaneously small and profoundly connected to the ocean. Whether you're eight or eighty, snorkeling here for the first time or the fiftieth, the experience never gets old.
Unforgettable Moments
400+ Species Underwater
Glide through water alive with reef triggerfish (Hawaiʻi's state fish), parrotfish, surgeonfish, moorish idols, and hundreds more species found only in Hawaiian waters
Hawaiian Green Sea Turtles
Spot honu (Hawaiian green sea turtles) resting on the sandy floor or gracefully cruising through the coral — one of Hanauma Bay's most beloved sights
Volcanic Crater Bay
Snorkel inside a 32,000-year-old collapsed volcanic cone — one of the most dramatic and unique natural settings in the entire Pacific
Beginner-Friendly Reefs
Shallow, calm waters near shore make Hanauma Bay perfect for first-time snorkelers, families, and anyone who wants a gentle introduction to Hawaiʻi's underwater world
⚠️ Safety Notes
- ✓All visitors must watch the mandatory marine education video before entering the water
- ✓Do not touch, stand on, or disturb any coral — even dead-looking coral is alive
- ✓Do not feed any fish or marine life — it disrupts their natural behavior and the ecosystem
- ✓Do not chase, ride, or approach Hawaiian green sea turtles or monk seals
- ✓Reef-safe, biodegradable sunscreen is strongly encouraged — chemical sunscreens damage coral
- ✓Flotation devices are available for rent — recommended for non-swimmers
- ✓Stay within the designated swimming areas — respect the bay's boundaries
- ✓Hanauma Bay is closed every Monday and Tuesday to allow the ecosystem to rest
🌿 Environment & Values
- ✓Marine Life Conservation District since 1967 — one of Hawaiʻi's oldest protected areas
- ✓Mandatory marine education program for all visitors before entering the water
- ✓Daily visitor caps strictly enforced to protect the ecosystem
- ✓Closed Monday and Tuesday every week to give the reef a rest from human activity
- ✓No fishing, no hunting, no collecting of any marine life or coral
- ✓A model for sustainable nature tourism studied by marine conservancies worldwide
Frequently Asked Questions
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