Blue-ringed Sea Crab
this crustacean, native to the oceans of Tinallis, was considered vermin by ecologists. Studies of the populations of various sea creatures revealed that, if allowed to reproduce at will, the blue-ringed sea crab would eventually choke out all other forms of life along the coast. For this reason, the government of Tinallis outlawed the hunting of the avian threshers, which fed on the sea crabs and kept their populations to a minimum.