How big do crustaceans get?
The largest of the crustaceans include the the giant Japanese spider crab (Macrocheira kaempferi) with its four-meter (13 foot) legspan (measured across the outstretched legs), the Alaskan king crab (Paralithodes camtschatica), which can weigh more than 10 kilograms (22 pounds), and the giant Tasmanian crab (Pseudocarcinus gigas), which has been recorded at an impressive 14 kilograms (31 pounds). On the other end of the spectrum, some crustaceans never grow larger than 0.25 millimeters (0.01 inch), even as adults.
