Frequently found under rock or reef ledges.  Carnivorous with well-developed organs for scent and vibration detection.

Like all sharks, the nurse shark has a skeleton of cartilage rather than bone.  Instead of scales, its body is covered with tiny razor-sharp denticles.  The teeth are specialized forms of denticles.  Sharks must continually swim or will slowly sink because they have no air bladder.

Edibility is poor.

Range is from Rhode Island to Brazil, including the Gulf of Mexico.
Found in reef areas and sandy bottoms.  The spotted eagle ray has a poisonous spine on its tail and incredibly powerful jaws to crush oysters, clams, and numerous crustaceans.  Divers report large schools during breeding season.

This ray is an active swimmer and often leaps into the air.  The slapping sound it makes on the water is thought to mark a territory.

Edibility is poor.

Range is throughout the tropics.