Black Sea Urchin, Arbacia lixula

(Not going to actually mail you one!) Found in the Mediterranean Sea and elsewhere, this urchin is typically found in shallow waters between just below sea level to about 100 feet deep.

Atlantic Bluefin Tuna, Thunnus thynnus

1000lb tuna!

Loggerhead Sea Turtle, Carretta carretta

The world's 2nd largest hard-shelled turtle. Lay their eggs on the beach.

Monk Seal, Monachus

Earless seals in danger of going extinct.

Bottlenose Dolphin, Tursiops truncatus

Inhabit warm and temperate seas, renowned for their intelligence and friendliness.