Captain Zodiac

The company's signature four-hour snorkel heads south to Kealakekua Bay, a marine life conservation district famous for 100-foot visibility and the granite obelisk that marks Captain Cook's final landfall. The rafts pull in close to lava-rock drop-offs before anchoring, so you can roll straight off the tube and drift over coral towers bright with yellow tang, parrotfish and the occasional eagle ray. All gear—masks, fins, flotation vests and even shortie wetsuits on request—comes included, and crew stay in the water to guide first-timers toward turtle cleaning stations and hidden swim-throughs.

On the ride back the captain hugs the shoreline, idling into sea caves, lava tubes and blowholes that only a shallow-draft inflatable can reach. When ocean conditions allow, you nose inside the cliff to feel the echo of pounding surf, then punch the throttles for a fast sprint across open blue water. Padded pontoons double as comfortable bench seats, dry storage keeps phones safe, and freshwater rinse hoses make it easy to shed salt before stepping ashore.

From December through early April, dedicated whale-watch departures trade snorkel time for a patient search offshore, where calves practice tail slaps and males broadcast their haunting songs. Sightings are common enough that Captain Zodiac offers a free return seat if whales refuse to show, the same guarantee the company extends to dolphin encounters on its wildlife-focused cruises.

Trips include reef-safe sunscreen, chilled drinks and island-grown snacks, leaving you free to pack only a swimsuit and towel. Browse our current Big Island snorkeling tours, set aside a seat on peak-season Big Island whale watching or mix Captain Zodiac with other Big Island activities to build a full Kona Coast itinerary.