Claim: Blue-ringed octopus hunt crayfish.
Evidence: They hunt small crabs , hermit crabs , shrimp , and other small crustaceans.
Crustaceans -LRB- Crustacea -LSB- krʌˈsteɪʃə -RSB- -RRB- form a large , diverse arthropod taxon which includes such familiar animals as crabs , lobsters , crayfish , shrimp , krill , woodlice and barnacles.