Best snorkeling spots on the Big Island: Where to find crystal-clear water, vibrant reefs, and sea turtles
The Big Island of Hawaii is a paradise for snorkelers, offering some of the clearest water, most colorful coral reefs, and incredible marine life, including the beloved Hawaiian green sea turtle (honu). Whether you're a beginner or an experienced snorkeler, these locations will leave you in awe of Hawaii’s underwater world.
49 Black Sand Beach
Located just 9 minutes’ drive from our condo (or take the challenging King’s Trail, with sturdy footwear required), this beach is salt-and-pepper sand and a wide bay that includes turtles and an abundance of fish. We’ve spotted octopus, eels, and color-changing cornet fish.
Why visit?
Generally very clear water, perfect for spotting marine life
Much less crowded than Kealakakua, Two Step or Kahalu’u
Easy water entry, and we recommend water shoes if your feet are particularly sensitive to pebbles.
Pro tip: Arrive early in the morning, before 8:30 a.m., to ensure a parking spot and enjoy the beach before the sand heats up by midday. Bring an umbrella for shade.
Kealakekua bay – pristine waters & historical significance
Kealakekua Bay is one of the best snorkeling spots on the Big Island, known for its crystal-clear waters and thriving coral reefs. Located near the Captain Cook Monument, this marine sanctuary is home to an array of tropical fish, spinner dolphins, and vibrant coral formations.
Why visit?
Exceptionally clear water, perfect for spotting marine life
Rich historical significance – this is where Captain James Cook first landed in Hawaii
Accessible by kayak, boat tour, or a very challenging hike. We recommend going on a snorkel boat tour, as early as possible.
Pro tip: Arrive early in the morning when the waters are calm and marine life is most active.
Mahu Kona
It is a decommissioned port and has a massive propeller and chains with links as big as dinnerplates scattered on the ocean floor. It is rarely crowded.
Tips: Avoid snorkeling when the surge is rough, because the entry can be very tricky as the water flows in. There is a ladder down to the water and the area around it is very slippery. There is no beach and you should bring a waterproof bag to keep your car keys with you when snorkeling. Don’t leave valuables in your car. Here’s a link to a map to it, and you can grab photos here too.
Two Step (Honaunau bay) – A sea turtle haven
Located near Puʻuhonua o Hōnaunau National Historical Park, Two Step is famous for its two-step entry from the rocks (hence the name) and diverse marine ecosystem. Honu frequently visit the bay, and you’ll also see an abundance of tropical fish and occasional reef sharks.
Why visit?
Large area to explore, surrounded by lava rock ledges
Frequent encounters with sea turtles
Stunning underwater topography, including coral shelves and lava formations
Respectful snorkeling tip: Keep a safe distance (at least 10 feet) from honu. Never touch or chase them—observe them peacefully.
Kahaluʻu beach park – perfect for beginners
Just south of Kailua-Kona, Kahaluʻu Beach Park is a great spot for beginners, offering shallow waters, a protective reef, and plenty of marine life. The area is a haven for honu, who can often be seen feeding on algae-covered rocks. Do not feed the fish — it’s not allowed.
Why visit?
Calm, shallow waters ideal for new snorkelers
Excellent chance to see sea turtles up close
Snorkel gear rentals and lifeguards on-site
Did you know? The reef here is a part of a conservation effort, so be mindful to use reef-safe sunscreen and avoid stepping on coral.
Mauna Lani beach – hidden gem for snorkelers with coral gardens
For a more secluded snorkeling experience, Mauna Lani Beach offers a tranquil setting with thriving coral gardens and abundant marine life. The nearby fishponds, historically used by Native Hawaiians, add a cultural element to your visit.
Why visit?
Less crowded than other popular spots
Clear waters with stunning coral formations
Beautiful surroundings, including ancient Hawaiian fishponds
Pro tip: Enjoy early morning snorkeling before the crowds arrive! It’s a long walk to the beach, so use our beach wagon to tote in your chairs, cooler and gear.
Ho‘okena beach park – Snorkeling with spinner dolphins
Ho‘okena Beach Park offers a unique snorkeling experience, where you might spot spinner dolphins resting in the bay. The black sand beach provides a picturesque setting, and the waters are teeming with colorful fish and coral.
Why visit?
Opportunity to see spinner dolphins in their natural habitat
Less touristy, offering a more local feel
Camping available for those who want to extend their adventure
Respectful interaction: If you see dolphins, observe from a distance and never attempt to swim toward them, as they are often resting.
Respecting Hawaii's marine life and reefs
Hawaii’s reefs and marine life are fragile and need our protection. Here’s how you can snorkel responsibly:
Use Reef-safe sunscreen – Chemicals in regular sunscreen can harm coral reefs. Opt for mineral-based options.
Don’t touch or step on coral – Coral is a living organism that can be damaged by human contact.
Give marine life space – Whether it’s a sea turtle or a reef shark, always observe from a respectful distance.
“The ocean is not just a playground — it’s a living, breathing ecosystem that we have the privilege to explore. Treat it with care, and it will continue to thrive for generations to come.”
Ready to snorkel? Come stay with us.
The Big Island’s underwater world is waiting for you. Whether you’re looking for sea turtles, vibrant reefs, or historical landmarks, these snorkeling spots offer unforgettable experiences.
Book your stay at our condo for easy access to these top snorkeling destinations. Wake up to ocean views, relax in comfort, and embark on daily snorkeling adventures just minutes away.
