832-398584 - Hippopotamus (Hippopotamus amphibius) under water looking into camera. Black and white wildlife image. Hwange National Park, Zimbabwe, Africa
832-397642 - Diver looking at illuminated soft corals (Alcyonacea) covered wreckage of sunken ship USS Liberty, Pacific Ocean, Tulamben, Bali, Indonesia, Asia
1116-49732 - The Backwall at Molokini Marine Preserve drops down to 300 feet. Various reef fish stick close to a crevice here, Molokini, Maui, Hawaii, United States of America
1116-41494 - Slate pencil sea urchins (Heterocentrotus mammillatus) colour the hard coral in this Hawaiian reef scene with three free divers, Molokini Marine Preserve off the island of Maui, Maui, Hawaii, United States of America
1116-41495 - Slate pencil sea urchins (Heterocentrotus mammillatus) colour the foreground of this Hawaiian reef scene with a young woman free diving with black triggerfish (Melichthys niger), Molokini Marine Preserve off the island of Maui, Maui, Hawaii, United States of America
1116-39960 - A split scene of a Blacktip Reef Shark (Carcharhinus melanopterus) just below the surface at sunset off the island of Yap, Yap, Micronesia
1179-1126 - Underwater view of the sandy beach surrounded by palm trees, Morris Bay, Antigua, Antigua and Barbuda, Leeward Island, West Indies, Caribbean, Central America
465-3373 - Scuba diver swimming with Gopro in coral landscape scenic at Thetford Reef on the Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific
465-3372 - Hard and soft coral landscape scenic at Thetford Reef on the Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific
974-430 - Tropical coral reef scene with a leafy cup coral (salad coral) (Turbinaria reniformi), Ras Mohammed National Park, off Sharm el Sheikh, Sinai, Egypt, Red Sea, Egypt, North Africa, Africa
869-4198 - green turtle or green sea turtle This green sea turtle Chelonia mydas has large fibropapilloma tumours on various parts of it's body Soon the tumours will grow to cover both eyes and limit the turtles ability to locate a food source Hawaii
869-4199 - green turtle or green sea turtle This green sea turtle Chelonia mydas has large fibropapilloma tumours covering its head and eyes Soon the tumours will grow to cover both eyes and limit the turtles ability to locate a food source Hawaii
974-362 - Tropical coral reef scene with a large table coral (Acropora pharaonis), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa
974-299 - Coral reef scene, shoal of glassfish (Arapriacanthus ransonneti), Ras Mohammed National Park, Sharm el-Sheikh, Red Sea, Egypt, North Africa, Africa
974-235 - Tropical coral reef scene with a leafy cup coral (salad coral) (Turbinaria reniformi), Ras Mohammed National Park, off Sharm el Sheikh, Sinai, Egypt, Red Sea, Egypt, North Africa, Africa
974-243 - Tropical coral reef scene in natural lighting, Ras Mohammed National Park, off Sharm el Sheikh, Sinai, Egypt, Red Sea, Egypt, North Africa, Africa
857-70947 - Tufa formations, towering remnants created by the upwelling of mineral deposits that formed underwater, make for an interesting and otherworldly scene at twilight along the shore of California's Mono Lake.