Greater Sealsnake

Plesiosaurs, such as Elasmosaurus, are the only marine reptiles, other than sea turtles, to survive the K-T extinction event. Sealsnakes are descended from a group of Elasmosaurids that survived and remained mostly unchanged. There are about 318 known species of sealsnakes around the world's oceans, lakes, and rivers, living alongside whales, dolphins, seals, sea lions, manatees, modern-styled sea turtles, modern sharks, and other marine life & freshwater species. Marine sealsnakes are similar to their ancestors. Many marine sealsnake species feed on fish, squid, and crustaceans, while freshwater sealsnakes feed on fish, crustaceans, small amphibians, smaller reptiles, small birds, and small mammals. Unlike marine sealsnakes, many species of river sealsnakes are adapted to rivers and lakes in North America, South America, Europe, Africa, and Asia, and are responsible for sightings of cryptids such as loch ness monsters, ogopogos, etc. They are similar to their ancestors, other than their brownish coloration and their ability to tolerate freshwater.