Other commonly eaten molluscs include octopuses and squids, whelks, oysters, and scallops. Octopuses, squids and cuttlefish belong to the clade Coleoidea. "Cameroceras" is a cephalopod, a taxon of molluscs that includes the octopuses, squids and cuttlefish. Its diet normally consists of fin and ray fish, squids, cuttlefish and occasionally carrion. The diet of bigfin reef squids comprises mainly crustaceans and small fish. It feeds in midwater on small squids, crustaceans, and fish. The longnose Sawshark is known to prey on small teleost fish, crustaceans, and small squids. The little tunny is an opportunistic predator, feeding on crustaceans, clupeid fishes, squids, and tunicates. Other alien designs were modeled after squids and crabs. Antarctic sea life includes penguins, blue whales, orcas, colossal squids and fur seals. Kraken were legendary sea monsters that may have been based on sightings of giant squids. The feces may contain undigested hard objects such as the beaks of squids. The egg capsules of the bigfin reef squids contain two to nine eggs each. Deep sea squids in the family Histioteuthidae have eyes of two different types and orientation. Whether bigfin reef squids recognise each other individually still remains unknown.