David Fleetham / Molokini Crater, aerial shot of charter boats in crescent shaped islet. Maui, Hawaii. January 2018.

David Fleetham / White spotted hermit crab (Dardanus megistos) amongst coral. Kauai, Hawaii.

David Fleetham / Molokini Crater, aerial shot of the crescent shaped islet at mid-morning with charter boats. Maui, Hawaii., June 2011.

David Fleetham / Couple free diving off Molokini Marine Preserve, Maui, Hawaii. Model released.

David Fleetham / Molokini Island Marine Preserve with the Kihei/Makena shoreline of Maui in the background, Maui, Hawaii.

Tim Fitzharris / Ocean surf crashing on lava rocks at Molokini Crater, Maui, Hawaii

David Fleetham / Hawaiian monk seal (Monachus schauinslandi), endemic and endangered, at Molokini Island off Maui, Hawaii.

David Fleetham / Parrotfish (Scarus sp.) Molokini Island marine preserve, Maui, Hawaii.

David Fleetham / Big fin reef squid (Sepioteuthis lessoniana), pair, at night, Molokini Island marine preserve, Maui, Hawaii.

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos), juvenile, Molokini Island off Maui, Hawaii.

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos), juvenile, near Molokini Island off Maui, Hawaii.

David Fleetham / Silhouette of couple snorkeling, Molokini Island, Maui, Hawaii.

David Fleetham / A dive instructor hand signalling to student diver over a reef, Molokini Islet. off Maui, Hawaii, Pacific Ocean. Model released.

David Fleetham / Three scuba divers swimming over coral reef looking at Slate pencil sea urchins (Heterocentrotus mammillatus), Molokini Marine Preserve, Maui, Hawaii, Pacific Ocean. Model released.

David Fleetham / Pyramid butterflyfish (Hemitaurichthys polylepis) with miscellaneous reef fish above the hard coral reef, Molokini Marine Preserve, Maui, Hawaii, Pacific Ocean.

David Fleetham / Sleek unicornfish (Naso hexacanthus) at a cleaning station with a Hawaiian cleaner wrasse (Labroides phthirophagus), Molokini Islet, Maui, Hawaii, Pacific Ocean.

David Fleetham / Slate pencil sea urchins (Heterocentrotus mammillatus) on a reef, with two swimmers free diving in background, Molokini Marine Preserve, Maui, Hawaii, Pacific Ocean.

David Fleetham / Aerial shot of the inside of the crescent shaped islet with charter boats on moorings, Molokini Marine Preserve, Maui, Hawaii. Seven images were combined for this panorama.

David Fleetham / Great barracuda (Sphyraena barracuda) can reach six feet in length, relatively rare to see underwater in Hawaii, off Molokini, North Pacific Ocean, Hawaii.

David Fleetham / Dive guide, Alex Taulere, checks back with his divers over a reef at Molokini Islet off Maui, Hawaii. Model released.

David Fleetham / Research divers from the MOC Marine Institute map out coral damage at Molokini Marine Preserve off the island of Maui, Hawaii. In the future, data from here will help to determine the health of Hawaii...

David Fleetham / Slate pencil sea urchins (Heterocentrotus mammillatus) on coral reef with two female free divers in the background, Molokini Marine Preserve, Maui, Hawaii. Model released.

David Fleetham / Shoulderbar soldierfish (Myripristis kuntee) shoal. Molokini, Hawaii.

David Fleetham / Molokini Crater, aerial shot of the entire crescent shaped islet with one charter sailboat boat and the island of Maui in the background, Hawaii.

David Fleetham / A group of divers on one of the corners of the Backwall at Molokini Marine Preserve, off Maui, Hawaii. Model released.