What is blueberry hermit crabs?

Blueberry hermit crabs are a variety of hermit crab that have a blue tint to their exoskeleton, giving them their name. They are found in coastal areas of the Caribbean, particularly around the U.S. Virgin Islands, and can grow up to about 1.5 inches in length. They are popular pets, but should not be kept alone as they are social creatures and require several other crabs to live with. Blueberry hermit crabs are scavengers and will eat a variety of foods, including fruits, vegetables, and meat. They are also known for their habit of switching shells as they grow, using empty snail shells to protect their soft, vulnerable abdomen.