Hanauma Bay Nature Preserve

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Last Updated: December 7, 2025

Hanauma Bay Nature Preserve is a popular tourist destination in Hawaii, known for its crystal-clear waters and diverse marine life.


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Summary

The bay is located on the southeastern coast of Oahu and is a protected marine life conservation area.

One of the main reasons to visit Hanauma Bay is for its snorkeling opportunities. Visitors can rent equipment and explore the bay's coral reefs, which are home to over 400 species of fish. The bay also offers educational programs and guided tours for those who want to learn more about the marine life and conservation efforts in the area.

One of the most popular points of interest in Hanauma Bay is the marine education center, which features interactive exhibits and displays about the bay's ecosystem. Visitors can also hike to the top of the bay's crater for panoramic views of the surrounding area.

Interesting facts about Hanauma Bay include that it was formed over 32,000 years ago from a volcanic eruption and that it was designated as a protected marine life conservation area in 1967. The bay is also known for its appearance in the opening scene of the TV show "Hawaii Five-0."

The best time of year to visit Hanauma Bay is in the summer months, when the water is calm and clear. It is important to note that the bay is closed on Tuesdays and visitors are required to watch a short video about conservation efforts before entering the preserve.

       

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Park & Land Designation Reference

National Park
Large protected natural areas managed by the federal government to preserve significant landscapes, ecosystems, and cultural resources; recreation is allowed but conservation is the priority.
State Park
Public natural or recreational areas managed by a state government, typically smaller than national parks and focused on regional natural features, recreation, and education.
Local Park
Community-level parks managed by cities or counties, emphasizing recreation, playgrounds, sports, and green space close to populated areas.
Wilderness Area
The highest level of land protection in the U.S.; designated areas where nature is left essentially untouched, with no roads, structures, or motorized access permitted.
National Recreation Area
Areas set aside primarily for outdoor recreation (boating, hiking, fishing), often around reservoirs, rivers, or scenic landscapes; may allow more development.
National Conservation Area (BLM)
BLM-managed areas with special ecological, cultural, or scientific value; more protection than typical BLM land but less strict than Wilderness Areas.
State Forest
State-managed forests focused on habitat, watershed, recreation, and sustainable timber harvest.
National Forest
Federally managed lands focused on multiple use—recreation, wildlife habitat, watershed protection, and resource extraction (like timber)—unlike the stricter protections of national parks.
Wilderness
A protected area set aside to conserve specific resources—such as wildlife, habitats, or scientific features—with regulations varying widely depending on the managing agency and purpose.
Bureau of Land Management (BLM) Land
Vast federal lands managed for mixed use—recreation, grazing, mining, conservation—with fewer restrictions than national parks or forests.
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