@brutamerica: Sea otters are known for their clever use of tools, and they often carry around rocks for several practical reasons. One of the main uses is for breaking open hard-shelled prey like clams, mussels, and sea urchins. They'll use the rock as a tool while floating on their backs, smashing the shells against it to access the soft meat inside. Additionally, sea otters have a loose patch of skin under their forearms that serves as a sort of pocket. In these pockets, they can store their favorite rocks as well as food collected during foraging dives. This adaptation allows them to crack open their prey at the surface, making them one of the few mammal species known to use tools. #seaotters #animals #cute #rocks