Although the island of Hawaii, also known as the Big Island, is most well known for its active volcanoes, the Big Island is also home to many excellent diving sites, especially on the Kohala Coast, which is the oldest part of the island. However, because the island is still relatively young, divers can find unique underwater volcanic features that make any dive on the island special. In addition to finding a wide variety of marine life, divers can explore volcanic mounds, lave tubes, and many other volcanic attractions.

One popular dive site located on the North Kohala coast is Crystal Cove. Divers can explore the unique black sand and a utopia of marine life including beautiful coral reefs. Spinner dolphins and manta rays can also be found every once and a while. Another dive site worth exploring is the Lava Dome, which is a 30 foot high volcanic dome covered in plate and knob coral. Many schools of fish like to congregate in the area, as well as blue dragon nudibranchs. In South Kohala you might want to check out an area known as the Puako cleaning station, which is known for being the site of numerous turtles being cleaned by the yellow tangs, damsels, and wrasses picking parasites of the turtles. Other dive sites you should explore include Turtle Mound, Puako Point, Ulua Cave, Horseshoe Reef, and Black Point.