Blue-ringed sea crab

The Blue-ringed sea crab was a crustacean native to the oceans of Tinallis. It was considered vermin by ecologists. Studies of the populations of various sea creatures reveal that, if allowed to reproduce at will, the sea crab would eventually destroy all forms of life along the coast. For this reason, the planetary government of Tinallis outlawed the hunting of the avian Threshers, which fed on the blue-ringed sea crabs. This kept their populations at a minimum.