Flounder

Flounder are a group of flatfish species. They are demersal fish found at the bottom of coastal lagoons and estuaries of the Northern Atlantic and Pacific Oceans. Flounder ambush their prey, feeding at soft muddy areas of the sea bottom, near bridge piles, docks and coral reefs, and have been also found at the bottom of the Mariana trench, the deepest known ocean canyon. Swiss scientist Jacques Piccard and US Navy Lt. Don Walsh reached a depth of 10,916 meters (35,814 ft) and were surprised to discover sole or flounder about 30 cm long. A flounder's diet consists mainly of fish spawn, crustaceans, polychaetes and small fish. Flounder typically grow to a length of 12.5–37.5 centimeters (4.9–14.8 in), and as large as 60 centimeters (24 in). Their width is about half their length.