Giant Crabs, Invertebrates, and the like:

http://en.wikipedia.org/wiki/Coconut_crab

http://www.kidport.com/RefLib/Science/Animals/AnimalIndexInv.htm

http://www.kidport.com/RefLib/Science/Animals/Animals.htm

http://news.nationalgeographic.com/news/2004/03/0309_040309_giantcrabs.html

http://www.foundationtv.co.uk/brilliantcreatures/ser4/show8item6.html

http://www.iol.ie/~seaworld/data/Crab.htm