Arthropoda: Common Hermit Crab!

• Common Hermit Crabs are nocturnal.
• Common Hermit Crabs can and will eat almost anything a human eats; from meat, fruit, and vegetables to popcorn, peanut butter, or crackers,
• Some common hermit crabs have been known to live up to 30 years.
• Common Hermit Crabs select their shells while young, and do not grow their own.
• Common Hermit crabs are social animals, and often live in groups up to 100.

http://www.arkive.org/common-hermit-crab/pagurus-bernhardus/
http://bioexpedition.com/hermit-crab/