Sea Otters Are Skilled Tool Users
Sea otters are surprisingly crafty, using rocks as hammers and even recycling discarded trash as tools. They have even been observed using crab claws to pry open other shells.
These clever marine mammals are known for their dexterity and creative problem-solving skills. By carrying stones in specialized loose skin pouches under their forearms, they keep their tools handy for cracking open tough shellfish. They also use kelp to anchor themselves while sleeping so they do not drift away in the current. Their ability to improvise with man-made debris like bottles shows just how resourceful these animals truly are in the wild.
Source: Tool use by sea otters