Stomach contents of South African fur seals indicate that fish make up about 70% of their diet, squid 20%, crab 2% (Schliemann, 1990). The remaining portion is composed of other crustaceans, cephalopods and sometimes birds (King 1983, Schliemann 1990). Australian fur seals commonly eat squid, octopus, fish and lobsters, along with other crustaceans and cephalopods (King 1983, Schliemann 1990). Like most air-breathing marine mammals A. pusillus finds its food in the ocean. In order to do so it must store oxygen and swim below the surface to the depth at which its particular prey is located. Both subspecies of A. pusillus dive for their food but they each occupy different depth niches in their respective locations. South African fur seals are surface divers with an average dive of about 45 meters and 2.1 minutes although they can dive as deep as 204 meters and for as long as 7.5 minutes when necessary (Riedman, 1990). While there is extensive overlap, Australian fur seals generally feed at a much lower depths. Their average dive is about 120 meters (Schliemann, 1990) and they commonly go as deep as 200 meters (Riedman, 1990).