Monk seals are a group of marine mammals belonging to the family Phocidae, commonly known as true seals. They are characterized by their rounded bodies, short flippers, and a lack of external ear flaps. There are several species of monk seals, including the Hawaiian monk seal, which is found in the waters of the Northwestern Hawaiian Islands. These seals primarily inhabit warm coastal areas and are known for their social behavior, often seen resting on beaches or rocky shores. Monk seals primarily feed on fish, squid, and crustaceans. Due to habitat loss and hunting, some species, like the Mediterranean monk seal, are critically endangered.