Crab (Rendezvous with Rama)

Crabs are arthropodal bio-robots that instinctively carry inanimate objects to garbage pits on Rama. It was first encountered by humans when the cosmonaut Jimmy Pak landed a personal gliding vehicle, which was recognized by one crab as foreign debris to be recycled.

Anatomy
The bodily layout of a crab more accurately resembles a beetle, with the exception of its claws. When finding objects, it manually breaks them down to be more easily carried on its flattened back. It has a variety of tool-like appendages in place of mouthpieces.