Australian sea lions feed on a small number of fishes (which include whiting, rays, and small sharks), squid, cuttlefish, and fairy penguins (Eudyptula minor). The main diet of N. cinerea consists of blue-throated wrasse (Notolabrus tetricus) and octopus (Achtel, P., personal communication). They concentrate on shallow-water benthic prey, and usually dive for food at depths no greater than 37 meters (Riedman, 1990).

Animal Foods: birds; fish; mollusks

Primary Diet: carnivore (Eats terrestrial vertebrates, Piscivore , Molluscivore )