Big Island Snorkel Tours
Kealakekua Bay · Manta Rays · Two-Step · Kona Coast
100 ft
Typical visibility at Kealakekua
14 ft
Manta ray wingspan
Year-round
Snorkeling season
4.9★
Average guest rating
The Kona Coast
Hawaii's Most Extraordinary Underwater World
The Big Island's Kona Coast is sheltered from trade winds year-round, creating some of the clearest, calmest snorkel conditions in all of Hawaii. But what truly sets the Big Island apart is its wildlife. Kealakekua Bay — a protected Marine Conservation District — is home to spinner dolphins, sea turtles, and reef ecosystems that have been undisturbed for decades. And then there are the mantas: the Kona Coast has the most reliable giant Pacific manta ray sightings in the world, with nightly encounters that rank among the most extraordinary wildlife experiences on Earth.
Choose Your Snorkel Adventure
Kealakekua Bay Snorkel Tour
Best in HawaiiKealakekua Bay is a Marine Life Conservation District and the premier snorkel destination on the Big Island — and arguably in all of Hawaii. The bay's protected waters shelter an extraordinary diversity of coral and fish, and spinner dolphins frequently rest here in the mornings. The site is also historically significant as the location where Captain Cook first made contact with Hawaiians in 1779. Access is by kayak or boat only.
- Marine Conservation District
- Spinner dolphins
- Captain Cook Monument
- Boat access only
Two-Step (Honaunau) Snorkel
Most PopularNamed for the natural lava rock steps that make entry into the water easy, Two-Step at Honaunau is one of the most accessible and rewarding snorkel sites on the Big Island. The reef begins immediately at the shore and is home to green sea turtles, spinner dolphins, and an extraordinary variety of tropical fish. Located adjacent to Pu'uhonua o Honaunau National Historical Park.
- Shore entry
- Sea turtles daily
- Spinner dolphins
- Next to historical park
Manta Ray Night Snorkel
Bucket ListOne of the most extraordinary wildlife encounters on Earth — snorkeling with giant Pacific manta rays at night off the Kona Coast. Mantas with wingspans up to 14 feet glide inches from snorkelers, feeding on plankton attracted by underwater lights. The Big Island's Kona Coast has the most reliable manta ray sightings in the world. An unforgettable bucket-list experience.
- Manta rays up to 14 ft
- Night snorkel
- Underwater lights
- World-class sightings
Private Snorkel Charter
PrivateYour own private boat and guide, your own pace, your own Big Island. Choose from Kealakekua Bay, Two-Step, the manta ray site, or let the captain pick the best conditions on the day. Combine snorkeling with dolphin watching, whale watching (Dec–Apr), or a coastal tour of the lava fields. All gear, food, and drinks included.
- Fully private
- Custom route
- All gear & food
- Dedicated captain
What You'll See
Big Island Marine Wildlife
Giant Pacific Manta Rays
The Kona Coast has the most reliable manta ray sightings in the world — wingspans up to 14 feet, feeding nightly on plankton.
Hawaiian Green Sea Turtles
Honu are abundant at Two-Step and Kealakekua Bay, often resting on the reef or feeding in the shallows.
Spinner Dolphins
Pods of spinner dolphins rest in Kealakekua Bay each morning before heading offshore to feed.
Tropical Reef Fish
Parrotfish, triggerfish, butterflyfish, and the state fish humuhumunukunukuapuaa thrive on Big Island reefs.
Humpback Whales
Visible from boats December through April during their annual migration through Hawaiian waters.
Octopus & Eels
The Big Island's lava rock reef structure creates ideal habitat for moray eels, octopus, and nudibranchs.
Frequently Asked Questions
What makes Kealakekua Bay so special?
Kealakekua Bay is a Marine Life Conservation District, which means fishing and anchoring are prohibited — the reef has been protected for decades and is extraordinarily healthy. The combination of pristine coral, abundant fish, spinner dolphins, and historical significance makes it the top snorkel destination on the Big Island.
Are manta ray sightings guaranteed?
The Big Island's Kona Coast has the highest manta ray encounter rate in the world — typically 80–90% on any given night. Most operators offer a free repeat trip if no mantas appear. Sightings are not guaranteed as these are wild animals, but the odds are excellent.
Is the manta ray snorkel safe?
Yes. Manta rays are filter feeders with no teeth and no stinger — they pose no danger to humans. Guests float on the surface holding a board with underwater lights while mantas glide beneath them. Guides are in the water at all times.
When is the best time to snorkel on the Big Island?
The Kona (west) Coast is sheltered from trade winds and has calm, clear water year-round. Visibility is typically 60–100 feet. There is no bad season for snorkeling on the Big Island — it's one of the most consistent snorkel destinations in Hawaii.
Is snorkel gear included?
Yes — masks, snorkels, and fins are included on all tours. Wetsuits are available for the night manta ray tour, where the water can feel cooler. Prescription masks are available on request.
More Big Island Adventures
Ready to Explore the Big Island's Reefs?
Call our local team to book your snorkel tour or ask about the manta ray night experience.