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Nature reserve · Honolulu, Hawaii
Hanauma Bay
A horseshoe-shaped bay inside a crater open to the sea, east of Honolulu, protected as a marine reserve since 1967. The shallow reefs host hundreds of fish species and are popular for snorkeling.
Illustrative images. The pictures in this guide are illustrations based on the real place, not photographs, and may differ from it.
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About Hanauma Bay
Hanauma Bay occupies the crater of a tuff cone formed tens of thousands of years ago. Over time the sea breached the southeast rim and flooded the interior, creating an almost circular bay protected from waves by a reef across the entrance.
Heavy fishing and large numbers of visitors nearly destroyed marine life during the 20th century. In 1967 the bay became a marine protected area, and fishing has been prohibited since then. The shallow reef, just a few meters from the sand, shelters about 400 fish species, as well as green turtles, which must not be touched or chased.
The reserve limits the number of daily visitors. Before descending to the beach, everyone watches a short video about protecting the corals and animals. From the visitor center at the top of the crater you walk down a steep ramp or take a tram to the sand.
The reserve is closed on Mondays and Tuesdays to allow the reef to rest. Out-of-state visitors pay an entrance fee and must reserve online, with two days’ notice.
Before you go
Practical information
Cidade Turismo reviews its information regularly, but something may have changed. Check with the place before planning your trip.
How much time to set aside
Three to four hours, including the video, the descent, and time in the water.
Best time
Right at opening in the morning, when the water is usually clearest and calmest and there are fewer people. Entry ends in the early afternoon. Closed on Mondays and Tuesdays.
How to get there
About 15 km east of Waikiki via Kalanianaole Highway (72), roughly a 30-minute drive. Parking is small and paid; there are city buses and transportation packages. Reserve admission on the City and County of Honolulu website; check before you go.
Tip
Reserve as soon as spaces open, two days ahead, because they often sell out within minutes. Bring reef-safe sunscreen and do not step on the reef.
Official website
Get your questions answered
Frequently asked questions about Hanauma Bay
Do you need a reservation for Hanauma Bay?
Yes, if you don’t live in Hawai‘i. Reservations open two days in advance online and often sell out quickly. Check before you go.
On which days is Hanauma Bay closed?
On Mondays and Tuesdays for reef rest, and on some public holidays.
Can you see turtles at Hanauma Bay?
Green sea turtles often appear in the bay. The rule is to keep your distance and never touch or chase the animals.