Marine eels are a type of fish that belong to the family Muraenidae. They are found in tropical and subtropical waters around the world, and are most commonly known as MORAY eels. MORAY eels have long, snake-like bodies and can grow up to 4 feet in length. They have sharp teeth and powerful jaws, and they feed on small fish, crustaceans, and mollusks. They are usually solitary creatures, but some species form small groups.