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The dugong is a medium-sized marine mammal. It is one of four living species of the order Sirenia, which also includes three species of manatees. It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century. The dugong is the only strictly marine herbivorous mammal, as all species of manatee use fresh water to some degree.
View from above of a trout suspended in a stream.  Small stream in Sequoia National Park, California.
Sea Needle or Garfish hunting swimming near a large school of Hardyhead Silverside fish on sunny day, Red sea, Egypt
A remora looks for a ride.
Beluga large aquarium. Fish of the sturgeon family, one of the largest freshwater predators. Beluga has valuable white dense meat. Female beluga spawn black eggs.
Tropical fish swimming through the open water over coral reef
A carnivorous freshwater fish that inhabit clear, vegetated lakes, ponds, swamps, and rivers.
giant extinct ocean creature
coral reef in the Red Sea, egypt
Swimming slowly, a large white sturgeon and salmon cruise the water in the Bonneville Fish Hatchery and Sturgeon Center along Oregon’s Columbia River.
Close Up of Eel Swimming in Lake In Auckland New Zealand
Underwater image of Nurse shark in the blue ocean of Bimini, The Bahamas
Pteraspis from the Devonian era 3D illustration
Swimming grass snake (Natrix natrix), sometimes called the ringed snake or water snake,
Fish isolated on white background.
Large Kingfish or Amberjack swimming in clear blue water
so called king of herrings source of sea serpent sightings
The Arctic grayling (Thymallus arcticus) is a species of freshwater fish in the salmon family Salmonidae. T. arcticus is widespread throughout the Arctic and Pacific drainages in Canada, Alaska, and Siberia, as well as the upper Missouri River drainage in Montana.  Wyoming.
Eurasian carp (Cyprinus carpio) swimming underwater in an aquarium
A barracuda is a large, predatory, ray-finned fish known for its fearsome appearance and ferocious behaviour. The barracuda is a saltwater fish of the genus Sphyraena, the only genus in the family Sphyraenidae which was named by Constantine Samuel Rafinesque in 1815. It is found in tropical and subtropical oceans worldwide ranging from the eastern border of the Atlantic Ocean to the Red Sea, on its western border the Caribbean Sea, and in tropical areas of the Pacific Ocean.
Schools of black koi have blue glassy scales. Swim in a pebbled pond with clean, clear water that is the nature of aquatic animals.
Water strider,
Mirror carp fishing
Channa maculata swimming in fish tank. An omnivorous fish that lives in the Mekong Delta is used to feed farmers during floods
Fish surfaces to the top of an aquarium. Positions directly in front of the camera.
Red tailed catfish
Barracuda in The Indian Ocean, Maldives
Golden Damsel Amblyglyphidodon aureus occurs in the tropical Western Pacific from Andaman Sea and Christmas Island in the Eastern Indian Ocean to Fiji, north to the Ryukyu Islands, south to Rowly Shoals and New Caledonia in a depth range from 3-45m, max. length 13cm.\nJuveniles in small groups are often found among large sea fans. Adults occur in steep outer reef, occasionally in deep lagoons and along channel walls, usually in current prone habitats and where there are abundant gorgonian and long sea-whip corals on which they lay and guard eggs. The species feeds on zooplankton. \nMost of the time, a fish's behavior depends on its species. From time to time it is possible to meet exceptions, like this specimen, a very curious character, not shy at all, who came back looking at the camera many times.\nTriton Bay, West Papua Province, Indonesia, \n3°54'52.0617 S 134°7'21.3867 E at 9m depth
Tropical fish with corals and algae in blue water. Beautiful background of the underwater world.
Carp (Cyprinus carpio)
Free Images: "bestof:Bathypterois dubius.jpg Bathypterois dubius From plate 20 of Oceanic Ichthyology by G Brown Goode and Tarleton H Bean published 1896 PD-old From http //www"
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