Portal:crustaceans Did You Know 21

... that symbiotic moss animals live on setae on the antennae, mouthparts and legs of the crab Goneplax rhomboides (pictured)?
... that Geograpsus severnsi is the first crab species known to have become extinct in historical times?
... that cycloids are believed to have been driven to extinction when crabs spread across their territory?
... that the fairy shrimp Branchinecta brushi lives at 5,930 m (19,460 ft) in the Chilean Andes, higher than any other crustacean in the world?