Stingrays have no bones and flat bodies. They have long tails with spines on it that can cause injury to anything that comes in contact with it. There are many types of rays. Some rays can grow to be 7 feet wide. They live in the ocean and in coral reefs. They also live under sand or in sea weed. Stingrays live in groups of four or five. Stingrays eat fish, crabs and squid by sucking them into their months. They also eat rocks to help crush their food. Sharks are their primary enemy.