Larva Crab Worms are large purple lobster-like creatures found on Pandora. They are very distinctive because of their dark purple color. Larva Crab Worms have two large pincers at the front, and a bright purple eye in the center of their head. They have the ability to do a long-ranged corrosive attack that fires purple acid. They can also burrow into the ground to retreat and will emerge somewhere nearby.