Rodhocetus

Rodhocetus gives us a clear example of a species evolutionary transition from landdweller to seafarer. One of the bestknown animals in the Cetacea infraorder (which includes whales, dolphins, and porpoises), Rodhocetus had short limbs ending in webbed hands and feet. Its characteristics closely resemble those of land mammals, thus leading scientists to conclude it was partway along the evolutionary transition from land to sea.