
A green turtle (Chelonia mydas) feeds on turtle grass (Thalassia testudinum) in a bay off Lod Howe Island.

Hawksbill turtle (Eretmochelys imbricata) swims over soft corals. Papua New Guinea.

Green sea turtle on the surface. Hawaii.

Colubrine sea krait, banded sea krait or yellow-lipped sea krait (Laticauda colubrina) Lembeh, Indonesia.

Yellow tang and brown tang clean a green sea turtle (Chelonia mydas) off the Big Island, Hawaii.

Banded sea krait (Laticauda colubrina) on the surface from below. Indonesia.

Head on shot of green turtle (Chelonia mydas). Lord Howe Island.

A green turtle (Chelonia mydas) swims by in the blue water. Hawaii.

A green sea turtle (Chelonia mydas) on a shallow reef. Hawaii.

A loggerhead turtle (Carreta carreta) sleeping in a cave. Bahamas.

A hawksbill sea turtle (Eretmochelys imbricata) swims past colorful soft corals. Indonesia.

Marine Iguana (Amblyrhynchus cristatus). Galapagos Islands.

A green turtle (Chelonia mydas) swims above sand while dispalying its paddle-like flippers. Hawaii.

Green sea turtle resting on the shore. Hawaii.

Green sea turtle stares at the camera. Hawaii.

Banded sea krait (Laticauda colubrina) in Raja Ampat, Indonesia.

Green sea turtle (Chelonia mydas) displaying its powerful flipper. Hawaii.

The rare sight of a leatherback turtle (Dermochelys coriace) feeding on thimble jellyfish. Solomon Islands.

Green sea turtle feeding on algae. Hawaii.

Hawksbill turtle (Eretmochelys imbricata) swims over soft corals. Papua New Guinea.

Green sea turtle swims out of a cave. Hawaii.

Well, hello there! Sea turtles can be a little dopey at times - usually after they’ve been feeding on certain (magic) sponges. This hawksbill turtle (Eretmochelys imbricata) literally swam right into me. Indonesia.

Green sea turtle (Chelonia mydas) resting inside a cave. Hawaii.

Head on shot of green sea turtle (Chelonia mydas) on a shallow reef. Hawaii.

A green sea turtle (Chelonia mydas) feeding on algae covered rocks. Hawaii.

Green sea turtle takes a breath at the surface. Hawaii.

Green turtle (Chelonia mydas) feeding on algae in shallow waters. Hawaii.

A green sea turtle (Chelonia mydas) looks down while blocking the sun. Hawaii.

Colubrine sea krait, banded sea krait or yellow-lipped sea krait (Laticauda colubrina) in Lembeh, Indonesia.

Marine iguanas (Amblyrhynchus cristatus). Galapagos Islands.

Marine iguana (Amblyrhynchus cristatus). Galapagos Islands.

Two remoras attached to the carapace of a green sea turtle (Chelonia mydas) in Palau. Some cultures used remoras to catch turtles. A line is fastened to the remora's tail, and when a turtle is sighted, the fish is released from the boat. It usually heads directly for the turtle and fastens itself to the turtle's shell. When the remora is hauled in so is the turtle.

Face to face with a green sea turtle (Chelonia mydas) on the surface. Hawaii.

Green sea turtle swims down under a breaking wave. Hawaii.

Green sea turtle (Chelonia mydas) perks up on shallow, rocky bottom after feeding on algae. Hawaii.

Green sea turtle - Icon of the sea. Hawaii.

Yellow lipped sea snake (Laticauda colubrine) on a gorgonian. Fiji.

Banded sea krait (Laticauda colubrina) curls up in typical snake-like fashion on a reef in Raja Ampat, Indonesia.

A green sea turtle (Chelonia mydas) on a shallow reef. Hawaii.

Green turtle (Chelonia mydas) circling in the turquoise waters of Hawaii. Over 90% of the Hawaiin Green Sea Turtle’s nesting activity occurs at French Frigate Shoals in the Papahānaumokuākea Marine National Monument (Northwest Hawaiian Islands). Hawaii.

Green sea turtle resting on the shore. Hawaii.

Green sea turtle under sunrays in the shallows. Hawaii.

Head on shot of hawksbill turtle (Eretmochelys imbricata). Palau.

A green sea turtle (Chelonia mydas) up close in Hawaii.

Head shot of a green sea turtle (Chelonia mydas). Hawaii.

Tangs and a parrotfish remove algae growing on a green sea turtle (Chelonia mydas). Hawaii.

Banded sea krait (Laticauda colubrina) hunting over a bright red sponge on a reef in Raja Ampat, Indonesia.

Hawksbill turtle (Eretmochelys imbricata) bolts down from the surface in Palau.

Green sea turtle blocks the sun after surfacing in waters off Kona, Hawaii.

Red color variant of Galapagos marine iguana (Amblyrhynchus cristatus). Galapagos Islands.

Head shot of green sea turtle. Hawaii.