860-290260 - BLUE DRAGON (Glaucus atlanticus). Small slug that measures only about 2 cm and is generally associated with the Portuguese man of war (Physalia physalis), although it also usually appears in intertidal pools. Marine invertebrates of the Canary Islands, Tenerife.

860-290095 - Octopus, Octopus vulgaris, Marine Protected area Punta Campanella, Massa Lubrense, Penisola Sorrentina, Costa Amalfitana, Italy, Tyrrhenian Sea, Mediterranean

860-289857 - Triton´s Horn, Trumpet Shell (Charonia lampas), protected species, Santa Maria Island, Azores, Portugal, Atlantic Ocean

860-290419 - Fin whale (Balaenoptera physalus) is the largest baleen whale found in the Mediterranean Sea. It is the world?s second largest cetacean, after the blue whale. Pelagos Sanctuary for Mediterranean Marine Mammals, Mediterranean Sea

860-289860 - Detail of Blue Spiny Starfish, Coscinasterias tenuispina, Santa Maria Island, Azores, Portugal, Atlantic Ocean

860-290421 - Snorkeler and fin whale (Balaenoptera physalus) is the largest baleen whale found in the Mediterranean Sea. It is the world?s second largest cetacean, after the blue whale. Pelagos Sanctuary for Mediterranean Marine Mammals, Mediterranean Sea

860-290415 - Flame scallop (Limaria hians or Lima hians), Puolo, Marine Protected area Punta Campanella, Massa Lubrense, Penisola Sorrentina, Costa Amalfitana, Italy, Tyrrhenian Sea, Mediterranean

860-290411 - Flame scallop (Limaria hians or Lima hians), Puolo, Marine Protected area Punta Campanella, Massa Lubrense, Penisola Sorrentina, Costa Amalfitana, Italy, Tyrrhenian Sea, Mediterranean

860-290381 - Zooplankton. Pelagic micro organism that is part of plankton (unidentified species). It lives dragged by the marine currents and it is common to observe it in spring. Marine invertebrates of the Canary Islands.

860-289868 - Loggerhead turtle (caretta caretta) accompanied by pilotfish (Naucrates ductor) swimming near the surface. Vulnerable. Santa Maria Island, Azores, Portugal, Atlantic Ocean

860-290093 - Hermit crab, Dardanus calidus, Mitigliano cave, Marine Protected area Punta Campanella, Massa Lubrense, Penisola Sorrentina, Costa Amalfitana, Italy, Tyrrhenian Sea, Mediterranean

860-289963 - Blue Dragon (Glaucus atlanticus) hanging. Small slug that measures only about 2 cm and is generally associated with the Portuguese man of war (Physalia physalis), although it also usually appears in intertidal pools. Marine invertebrates of the Canary Islands, Tenerife.

860-290259 - BLUE DRAGON (Glaucus atlanticus). A small peacic slug that measures only about 2 cm and is generally associated with the Portuguese frigatebird (Physalia physalis) or the blue button (Porpita porpita) on which it feeds. They can also appear in intertidal pools. Marine invertebrates of the Canary Islands, Tenerife.

860-290382 - Zooplankton. Pelagic micro organism that is part of plankton (unidentified species). It lives dragged by the marine currents and it is common to observe it in spring. Marine invertebrates of the Canary Islands.

860-290380 - Yellow seafan (Leptogorgia viminalis), Underwater backgrounds of the Canary Islands, Gran Canaria..

1350-2428 - Green sea turtle, Chelonia mydas, Kailua-Kona, Hawaii, (Pacific)

1350-2571 - Hawaiian reef lobster, endemic, Enoplometopus occidentalis, Portlock, Oahu, Hawaii (N. Pacific)

1350-3546 - Ladybug amphipods, undescribed species, Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

1350-3569 - Several species of small schooling fish such as damselfish, fusiliers, and anthias feed on plankton in the water column above hard corals, Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

1350-2574 - Beaked Whale stranded on coral reef during low tide, Mesoplodon sp., Mili, Marshall Islands (N. Pacific)..

1350-2427 - Green sea turtle, Chelonia mydas, gets cleaned by yellow tangs, Zebrasoma flavescens and lined bristletooth, Ctenochaetus striatus, Kailua-Kona, Hawaii, (N. Pacific)

1350-3568 - Several species of small schooling fish such as damselfish and anthias feed on plankton in the water column above hard corals, Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

1350-2449 - Spinner dolphin, Stenella longirostris, Namu atoll, Marshall Islands (N. Pacific).MID0042

1350-2426 - Green sea turtle, Chelonia mydas, gets cleaned by yellow tangs, Zebrasoma flavescens and lined bristletooth, Ctenochaetus striatus, Kailua-Kona, Hawaii, (N. Pacific)

1350-3566 - A magnificent anemone, Heteractis magnifica, in a shallow hard coral garden featuring several species of hard coral including finger and plate corals such as Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

1350-2534 - Starry night octopus, Octopus luteus, foraging on coral reef at night, Malapascua, Cebu, Philippines, Visayan Sea.

1350-3565 - A magnificent anemone, Heteractis magnifica, in a shallow hard coral garden featuring several species of hard coral including finger and plate corals such as Porites sp., and Acropora sp., Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

1350-2318 - Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)

1350-2316 - Crab preying on dead portuguese man-of-war, Physalia physalis, Praia do Forte, Bahia, Brazil (South Atlantic)

1350-2317 - Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)

1350-2314 - Green sea turtles hatching, Chelonia mydas, Fernando de Noronha, Pernambuco, Brazil.

1350-1826 - California sea lions (Zalophus californianus) in Baja California Sur, Mexico.

1350-1824 - California sea lions (Zalophus californianus) in Baja California Sur, Mexico.

1350-1815 - California sea lions (Zalophus californianus) in Baja California Sur, Mexico.

1350-1854 - A smooth hammerhead shark (Sphyrna zygaena), swims under the surface in open ocean, breaking the water with its dorsal fin, Sea of Cortez, Mexico

1350-1823 - California sea lions (Zalophus californianus) in Baja California Sur, Mexico.

1350-1822 - California sea lions (Zalophus californianus) in Baja California Sur, Mexico.

860-288778 - Marine Iguana (Amblyrhynchus cristatus) portrait, South Plaza Island, Galapagos Islands

860-288896 - Triton (Charonia lampas), off M?dic, Morocco. Species listed in Appendix II to the Barcelona Convention (Protocol concerning specially protected areas and biological diversity in the Mediterranean)

860-288897 - Giant Doris (Felimare picta), off Calella de Palafrugell, Costa Brava, Spain

860-288995 - Brown-Tipped Spindel Cowrie (Pellasimnia brunneiterma) on sea fan, Misool, Raja Ampat, Indonesia

1116-49706 - Mr. Fleetham spent an afternoon photographing these Atlantic Spotted Dolphin (Stenella plagiodon). During the several hours in the water a group of Atlantic Bottlenose Dolphin (Tursiops truncates) joined the company for nearly an hour of inter-species exchange, Bahamas

1116-49671 - 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's reefs, Maui, Hawaii, United States of America

1116-49673 - Research divers from the MOC Marine Institute glue broken coral heads back together and 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's reefs, Maui, Hawaii, United States of America

1116-49660 - Encounters with Hawaiian monk seals (Monachus schauinslandi) (endemic and endangered) are few and far between. Here a monk seal shares a patch of sand with a Green sea turtle (Chelonia mydas), also an endangered species, off Maui, Maui, Hawaii, United States of America

860-288008 - (Mnemiopsis leidyi), the warty comb jelly or sea walnut. Only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

860-287902 - Sub-adult sperm whale try to move away a calf to to mate with a female, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287964 - Big Gulf grouper (Mycteroperca jordani), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287920 - Sub-adult sperm whale try to move away a calf to to mate with a female, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-288004 - A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), Tasiilaq, East Greenland

860-287965 - Big Gulf grouper (Mycteroperca jordani) in front of a Shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-288001 - A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), swimming in front of an iceberg, Tasiilaq, East Greenland

860-287910 - Pod of Sleeping sperm whale (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-288167 - Omura's whale (Balaenoptera omurai) portrait, Nosy Be, Madagascarlast identified species of fin whale

860-287977 - Gafftopsail Pompano (Trachinotus rhodopus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287972 - Shoal of Graybar Grunt (Haemulon sexfasciatum), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287908 - Sperm whale mother and calf, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-288007 - A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), Tasiilaq, East Greenland

860-288540 - Green Turtle (Chelonia mydas), Tenerife, Canary Islands, Spain, Atlantic Ocean

860-288542 - Green Turtle (Chelonia mydas) and diver, Tenerife, Canary Islands, Spain, Atlantic Ocean

860-288006 - A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), Tasiilaq, East Greenland

860-288277 - Common Cuttlefish (Sepia officinalis) under the surface at dusk, Miseno, Napoli, Italy, Tyrrhenian Sea

860-287960 - Scuba diver surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-288002 - (Mnemiopsis leidyi), the warty comb jelly or sea walnut. Only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

860-288276 - Common Cuttlefish (Sepia officinalis) spitting ink under the surface at dusk, Miseno, Napoli, Italy, Tyrrhenian Sea

860-287979 - Big Gulf grouper (Mycteroperca jordani), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287963 - Shoal of Dog snapper, (Lutjanus novemfasciatus) in front of shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287900 - Couple of sperm whale, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287918 - Freediver swimming with female sperm whale, Physeter macrocephalus, Vulnerable (IUCN), Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 17/01/02 FIS-4.

860-287911 - Sleeping sperm whale, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287978 - Leopard grouper (Mycteroperca rosacea), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287899 - Pod of short-finned pilot whales, (Globicephala macrorhynchus), Dominica, Caribbean Sea, Atlantic Ocean.

860-288278 - Common Cuttlefish (Sepia officinalis) under the surface at dusk, Miseno, Napoli, Italy, Tyrrhenian Sea

860-287913 - Tail of sperm whale, (Physeter macrocephalus). Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287974 - Golden grouper (Mycteroperca rosacea), yellow color-variation of the most common leopard grouper species, Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287975 - Big Gulf grouper (Mycteroperca jordani), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287961 - Scuba diver surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287921 - Sub-adult sperm whale try to move away a calf to to mate with a female, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287919 - Freediver swimming with female sperm whale, Physeter macrocephalus, Vulnerable (IUCN), Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 17/01/02 FIS-4.

860-287904 - Pod of sperm whale socializing, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287915 - Sperm whale mother and calf, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287968 - Scuba diver on the sandy bottom surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287966 - Scuba diver with big Gulf grouper (Mycteroperca jordani), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-288168 - Santa Cruz marine iguana (Amblyrhynchus cristatus hassi)

860-288585 - Moon Jellyfish (Aurelia aurita) on black background, Mayotte

860-288541 - Green Turtle (Chelonia mydas), Tenerife, Canary Islands, Spain, Atlantic Ocean

860-288539 - Green Turtle (Chelonia mydas) and diver, Tenerife, Canary Islands, Spain, Atlantic Ocean

860-288535 - Violet Sea Urchin (Sphaerechinus granularis), Tenerife, Canary Islands, Spain, Atlantic Ocean

860-288273 - School of fish under the surface at dusk, island Procida, La Corricella, Tyrrhenian Sea, Campania Italy

860-288231 - Swimming crab (Cronius ruber). Newly cited species in the Canary Islands (2015). Due to its large number of observations it is considered invasive. Marine invertebrates of the Canary Islands, Tenerife.

860-288161 - Bottlenose dolphin (Tursiops truncatus). Juvenile playing and jumping on surface. Tenerife, Canary Islands.

860-287996 - A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), swimming in front of an iceberg, Tasiilaq, East Greenland

860-288005 - A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), swimming in front of an iceberg, Tasiilaq, East Greenland

860-288003 - A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), Tasiilaq, East Greenland

860-287909 - Pod of sperm whale relaxing after a short sleep (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287907 - Pod of sperm whale socializing, (Physeter macrocephalus), Vulnerable (IUCN), The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Image has been shot in Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287914 - Free diver is swimming over a pod of Sleeping sperm whale (Physeter macrocephalus) Researchers first saw this unusual sleep behavior in sperm whales in 2008. The scientists in that study found that sperm whales dozed in this upright drifting posture for about 10 to 15 minutes at a time, Vulnerable (IUCN). The sperm whale is the largest of the toothed whales. Sperm whales are known to dive as deep as 1,000 meters in search of squid to eat. Dominica, Caribbean Sea, Atlantic Ocean. Photo taken under permit n°RP 16-02/32 FIS-5.

860-287971 - Scuba diver surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287973 - Diamond stingray (Dasyatis brevis) with Longspined porcupinefish (Diodon holocanthus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

860-287962 - Shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico