Sea otters eat many kinds of invertebrates, including sea urchins, abalone, clams, crabs, snails, sea stars, squid & octopuses. Sea otters are one of the few animals that use tools. After hunting on the seafloor, sea otters return to the surface to eat. Otters spend 8 hours a day feeding, they eat a quarter of their weight,, Everyday. Eating over 40 animals