1387-973 - A starfish with spiny sea urchins at Quadra Island, British Columbia in Canada.

1387-959 - A diver shines a light in on a cavern filled with glassy sweepers (Pempheris schomburgkii) at Molasses Reef in Key Largo, Florida.

1387-928 - Scuba diver swimming over a massive school of jack fish in Cabo Pulmo, Mexico

1387-914 - Silver grunts swmming around Treasure Wreck, Nassau, The Bahamas.

1387-911 - School of horse-eye jack fish swmming by the Ray of Hope shipwreck, Nassau, The Bahamas.

1387-910 - School of silversides form shapes in the tunnels at Eden Rock, Grand Cayman.

1387-857 - Batfishes swimming around a shipwreck in Anilao, Philippines.

1387-856 - Batfishes swimming around a shipwreck in Anilao, Philippines.

1387-852 - Colorful reef with fishes and sun burst in Komodo, Indonesia.

1387-846 - Barrel sponge in the reef with fishes in the Banda Sea, Indonesia.

1387-1540 - Chinstrap penguins on an iceberg near Aitcho Islands, Antarctic Peninsula.

1387-1539 - Chinstrap penguins on an iceberg near Aitcho Islands, Antarctic Peninsula.

1387-1538 - Chinstrap penguins on an iceberg near Aitcho Islands, Antarctic Peninsula.

1387-1518 - A school of Bluegill and Sunfish appear to swim toward the light from above over the Morrison Springs cavern dropoff at the state park in northwest Florida.

1387-1475 - Remora's suck the the hull of a shipwreck, Beqa Lagoon, Fiji.

1387-1443 - Schooling anthias fish and healthy corals of Beqa Lagoon, Fiji.

1387-1434 - Schooling scalefin anthias fish (Pseudanthias squamipinnis) and beautiful soft corals of Beqa Lagoon, Fiji.

1387-1417 - Schooling anthias fish and healthy corals of Beqa Lagoon, Fiji.

1387-1416 - Schooling anthias fish and healthy corals of Beqa Lagoon, Fiji.

1387-1382 - A large silvertip shark comes in close to look at the photographer, Fiji.

1387-1381 - A 10 foot Tiger Shark consumes a large tuna head that was hand-fed by a local Fijian dive guide.

1387-1380 - A large 10 foot Tiger Shark swims into the feeding zone, Fiji.

1387-1379 - A large 10 foot Tiger Shark swims into the feeding zone, Fiji.

1387-1378 - A large 10 foot Tiger Shark swims into the feeding zone, Fiji.

1387-1377 - A large 10 foot Tiger Shark swims into the feeding zone, Fiji.

1387-1376 - Tawny Nurse Shark swims away after eating some fish scraps, Fiji.

1387-1372 - Hawksbill turtle glides over the pristine reefs in Fiji.

1387-1371 - A school of orange basslets (Pseudanthias squamipinnis) on a healthy Fijian reef full of hard and soft corals, Fiji.

1387-1367 - Detailed view of soft coral revealing the spicules that give stability to its form, Fiji.

1387-1365 - A large Lemon Shark gulps down a large tuna head in front of a crowd of divers, Fiji.

1387-1359 - Huge bull shark with mouth open, Fiji.

1387-1357 - A school of orange basslets (Pseudanthias squamipinnis) on a healthy coral reef, Fiji.

1387-1356 - A school of orange basslets (Pseudanthias squamipinnis) on a healthy coral reef, Fiji.

1387-1353 - Swarms of small baitfish swim above a large sea anenome, Fiji.

1387-1352 - A huge bull shark with accompanying remora and schooling giant trevally, Fiji.

1387-1343 - School of Brown Chromis near a large elephant ear sponge, Bonaire, Caribbean Netherlands.

1387-1338 - Purple sponge on a deep reef, Bonaire, Caribbean Netherlands.

1387-1335 - A large group of purple tube sponge sits high on the reef, Bonaire, Caribbean Netherlands.The Hilma Hooker Shipwreck is visible in the background.

1387-1314 - Unknown gobie/ blenny found at 48 feet deep, Bonaire, Caribbean Netherlands.

1387-1313 - Schooling Brown Chromis, Bonaire, Caribbean Netherlands.

1387-1278 - Oceanic whitetip shark, Red Sea, Egypt.

1387-1165 - Large school of dozens of scalloped hammerhead shark converging towards the surface, silhouetted against the blue water, Cocos Island.

1387-1139 - A pair of oceanic blacktip sharks with remora in tow pass each other by in a cloud of silvery fish, Aliwal Shoal, Umkomaas, KwaZulu-Natal, South Africa.

1387-1134 - Yellow black coral bush and yellow and blue striped sweeltip fish, Komodo, Indonesia.

1387-1118 - School of jacks at Liberty Wreck, Bali, Indonesia.

1387-1117 - School of jacks and divers at Liberty Wreck, Bali, Indonesia.

1387-1093 - Great white shark (Carcharodon carcharias) swims by divers in a shark cage, Isla Guadalupe, Baja California, Mexico. The divers are feeding the shark jack mackerel (Trachurus symmetricus).

1387-1013 - A sea lion, Zalophus Californianus, in the sea of Cortez, Los Islotes, Mexico.

1387-1008 - A triggerfish swims under a surface thick with a school of small fish, Raja Ampat, Indonesia.

1387-1005 - Glassfish swirling around a natural arch full of soft corals, Raja Ampat, Indonesia.

1387-1004 - Soft and hard corals make a coral bommie surrounded by anthias and other small reef fish, Raja Ampat, Indonesia.

1112-11880 - Two mother polar bears (Ursus maritimus) with cubs of the year watch a male bear feeding on a fin whale carcass in Svalbard, Norway

1112-11626 - Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America

1112-11611 - Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America

1184-13720 - African forest elephant (Loxodonta cyclotis), Dzanga Bai, Dzanga Sangha National Park, UNESCO, Central African Republic

1184-13709 - African forest elephant (Loxodonta cyclotis), Dzanga Bai, Dzanga Sangha National Park, UNESCO, Central African Republic

1112-11569 - Northern (Steller) sea lions (Eumetopias jubatus) hauled out on South Marble Island in Glacier Bay National Park, Alaska, United States of America

1387-836 - Trio of snappers hunting for bait fish, Los Islotes, La Paz, Mexico.

1387-815 - School of Jacks in motion, Belize.

1387-807 - School of Jacks, Indonesia.

1387-801 - Golden-lined snapper in Raja Ampat, Indonesia.

1387-798 - Oxeye scad in Raja Ampat, Indonesia.

1387-729 - Two oceanic manta rays (Mobula birostris) coming in to a cleaning station, Maldives.

1387-728 - Reef shark (Carcharhinus perezii) with a school of silversides, herrings and anchovies, Cuba.

1112-9487 - Adult bull southern elephant seal (Mirounga leonina) issuing a bellowing challenge at Gold Harbour on South Georgia, Polar Regions

1387-702 - A coral bommie in the Red Sea at Yolanda Reef is full of anthias fish.

1387-699 - A titan triggerfish hovers in a cleaning station, Red Sea.

1387-697 - A coral bommie full of reef fish and healthy corals, Red Sea.

1387-693 - A reef manta ray (Mobula alfredi), hovers over a reef where small cleaner wrasse will relieve her of her parasites, Maldives.

1387-694 - A coral bommie full of life, Maldives.

1387-692 - Several pink anemones cluster on top of a coral outcropping providing homes for several anemone fish, Maldives.

1387-690 - A nurse shark swims along a reef with a school of yellow snapper, Maldives.

1387-689 - A school of yellow snapper hovers close to a coral reef, Maldives.

1387-685 - A school of sweetlip fish stacked up against a coral head, Maldives.

1387-683 - Panamic cushion stars (Pentaceraster cumingi), gather on the sea floor, Sea of Cortez.

1387-672 - A cove contains thousands of glass fish and some black coral, Raja Ampat, Indonesia.

1387-671 - A school of fish with a few stragglers catching up to the school, Raja Ampat, Indonesia.

1387-665 - Schooling fish in vibrant yellow hover over a coral reef in Raja Ampat, Indonesia.

1387-654 - Marbled grouper from the French Polynesian Islands gather in the South Pass of Fakarava to spawn just once a year, French Polynesia.

1387-632 - A school of unicorn fish hover over the Yolanda wreck, Red Sea, Egypt.

1387-627 - Striped catfish swim in schools feeding one in front of the other, Anilao, Philippines.

1387-617 - A lionfish takes up residence on the deck of the Yamagiri Maru, in the Pacific Ocean, Micronesia.

1387-615 - A silky shark swims against a school of black jacks, Socorro Island, Mexico.

1387-612 - A Caribbean reef shark and a school of fish, Grand Cayman, Cayman Islands.

1387-595 - A giant oceanic manta ray hovers over a cleaning station near a sea fan, Raja Ampat, Indonesia.

1387-593 - A green sea turtle swims by a reef under the sun, North Sulawesi, Indonesia.

1387-591 - Sea lions play among the baitfish under the California Oil Rigs, Southern California.

1387-575 - A beautiful coral reef thrives in shallow water in Indonesia's Banda Sea. This part of eastern Indonesia is home to part of the world's greatest marine biodiversity.

1387-544 - Beautiful mushroom coral and reef fish thrive amid the tropical islands of Raja Ampat, Indonesia.

1387-545 - Beautiful corals and reef fish thrive amid the tropical islands of Raja Ampat, Indonesia.

1387-539 - Humbug damselfish hover above protective corals in Raja Ampat, Indonesia.

1387-537 - A school of blue-green damselfish, Chromis viridis, hovers amid the tropical islands of Raja Ampat, Indonesia.

1387-536 - A beautiful coral reef thrives amid the tropical islands of Raja Ampat, Indonesia.

1387-526 - A thick school of yellow-striped scad swims below a jetty amid the tropical islands of Raja Ampat, Indonesia.

1387-469 - Beams of light descend through a wooden jetty in the Dampier Strait, Raja Ampat, Indonesia. This tropical area is known for its extraordinary marine biodiversity and is a popular destination for divers and snorkelers.

1387-470 - A school of lined sweetlips, Plectorhinchus lineatus, swim above a healthy coral reef in Raja Ampat, Indonesia.

1387-463 - Small cardinalfish hover amid mangrove prop roots in a remote part of Raja Ampat, Indonesia.

1387-458 - A school of silversides swims in the shallows in a remote part of Raja Ampat, Indonesia.

1387-459 - A beautiful coral reef thrives in a remote part of Raja Ampat, Indonesia.

1387-454 - Detail of coral polyps growing on a healthy reef in Raja Ampat, Indonesia.