Historical water-quality planning, visibility & marine life
Maui is a world-class snorkeling destination with everything from offshore volcanic craters to calm resort bays. This guide uses historical water-quality estimates, geography, typical visibility, and overall experience for planning. A dry climate or a high historical rating does not establish today’s water quality; check the current notices above and the exact beach before entering.
The gold standard for Maui snorkeling. This partially submerged volcanic crater sits 3 miles offshore with crystal-clear water often exceeding 150 feet of visibility. An offshore location does not rule out contamination or hazards today. Over 250 species of fish. Accessible only by boat tour — morning trips offer the best conditions.
The best shore-entry snorkeling on Maui. Protected crescent bay with visibility and calm conditions that vary by day. Historical bacteria estimates do not establish current water quality. Reef starts close to shore. Sea turtles, reef fish, and occasional octopus. Great for all skill levels.
Marine life sanctuary with coral reefs and visibility that varies with current conditions. Incredible diversity of fish, sea turtles, and rays. Only accessible for snorkeling April through October — big winter surf makes it dangerous. No facilities.
Sandy-bottom bay with calm water and regular sea turtle appearances. Good visibility and gentle conditions make it ideal for families and beginners. Best snorkeling is along the rocky edges of the bay. Check current DOH notices and local conditions; the historical rating is not a current measurement.
South Maui’s best shore snorkeling spot. Rocky reef between Ulua and Mokapu beaches supports diverse marine life. The dry climate is planning context, not confirmation of today’s water quality. Easy access from Wailea resorts. Morning conditions are best.
Famous for reliable green sea turtle sightings. Lava rock formations provide habitat for turtles, reef fish, and eels. Located in the dry Makena area; geography does not confirm today’s water quality. Popular boat tour stop combined with Molokini. Strong currents possible.
The rocky south end of Kam III provides good snorkeling with reef fish and occasional turtles. Lifeguard-protected beach with good facilities. Best snorkeling in calm conditions along the lava rock outcropping.
Top-rated experiences near this beach. Check water quality above, then plan your trip.
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⚠️ Important Disclaimer
Safe to Swim Hawaii is an independent passion project — not affiliated with DOH or any government agency. Water quality ratings are estimates based on publicly available testing data. They are not real-time measurements.
Always verify conditions with the Hawaii DOH Clean Water Branch before entering the water.
This site does not recommend or advise anyone to swim at any beach. We share government data and geographic analysis so you can make your own informed decisions. By using this site you accept full responsibility for your own safety. See our Terms of Use for full details.
When in doubt, don't go out. 🤙