Turtles have adapted to their environment by evolving differently shaped feet, shells and mouths. Turtles that live in the water often have flattened shells, while those living on land often have rounded shells. The feet of turtles reflect their habitat choice, as feet are generally webbed in aquatic species and elephant-like in terrestrial species. Turtles have mouths that suit their diet.Continue Reading
Some of the best swimming turtles, such as soft shelled turtles and Fly River turtles, have very flat shells and webbed feet. Sea turtles take aquatic adaptation even further and have limbs that are reduced to paddles. Many aquatic turtles, such as mud and musk turtles, can swim enough to survive, but they are better suited for walking along the bottom of ponds, rivers and swamps. Land-living tortoises that have to travel long distances have pillar-like feet, well adapted for carrying their heavy bodies.
Turtles that eat large prey typically have very large, powerful mouths. Snapping turtles have large, razor-edged beaks that enable them to engulf fish and other turtles. By contrast, the strange South American freshwater turtle called the mata mata hunts by sucking fish into its mouth. Accordingly its mouth has evolved to generate powerful suction forces.Learn more about Zoology
Hydras feed by stinging smaller animals that happen to encounter their tentacles while passing by and then drawing them to their mouths. Some hydra also form symbiotic relationships with photosynthetic algae and gain some of their energy from them in the form of sugars in exchange for the nutrients in prey.Full Answer >
Turtles never come out of their shells. A turtle shell grows with the turtle, so there is no reason for a turtle to swap shells. If a turtle shell receives any damage, it can repair itself the same way as any other living part of the turtle.Full Answer >
Adductor muscles allow clams to open and close their shells. The muscles also allow clams to close their valves tightly when they are exposed to air, low water levels or predators.Full Answer >
Some distinctive features of sea turtles include their long, sweeping front flippers, beak-like mouths, nonretractable head and large shells. Depending on the type of turtle, the shell may be hard and bumpy or smooth and leathery. Turtles come in variety of colors from green to black.Full Answer >