Hawaii, Lanai, Diver Near Cathedral Underneath A Billowing Wave.

Hawaii, Lanai, Black Coral (Antipathes Ulex) Hanging Over Second Cathedral Cavern.

Hawaii, Lanai, Two Divers With Flashlights, Pictured At Entrance To An Underwater Lava Tube.

Hawaii, Lanai, Two Divers With Flashlights, Pictured At The Entrance To Second Cathedral.

Diver inside a cavern known as First Cathedral off the island of Lanai; Hawaii, United States of America

Endangered Green Sea Turtle (Chelonia Mydas), A Common Sight Around Hawaii, Being Photographed By A Diver.

Diver and schooling Yellowfin Goatfish (Mulloidichthys vanicolensis). This species turns red at night and when they are in caves during the day; Kauai, Hawaii, United States of America

Diver and a school of Dusky batfish (Platax pinnatus) at the entrance to a cavern with alcyonarian coral off the island of Gato, Bohol Sea; Philippines

Diver and a banded spiny lobster (Panulirus marginatus), an endemic species; Hawaii, United States of America

Diver outside of the dive site called First Cathedral off the island of Lanai; Hawaii, United States of America

Diver at one of the many openings around the dive site called First Cathedral off the island of Lanai; Hawaii, United States of America

Schooling raccoon butterflyfish (Chaetodon lunula) and a diver framed in a lava formation off the island of Lanai; Lanai, Hawaii, United States of America

Hawaii, Kauai, a young woman pretends to wear goggles.

Hawaii, Kauai, a young woman pretends to wear goggles.

Green Sea Turtle (Chelonia mydas) resting on a sandy bottom adjacent to Kauai, Hawaii, in the spring; Kauai, Hawaii, United States of America

Hawaii, Kauai, Scuba Diver At Cavern Entrance.