Atlas of Living Australia (ALA) via https://bie.ala.org.au/species/

Southern Elephant Seal

Mirounga leonina

Conservation status: vulnerable

The southern elephant seal (Mirounga leonina) is one of two species of elephant seals. It is the largest member of the clade Pinnipedia and the order Carnivora, as well as the largest extant marine mammal that is not a cetacean. It gets its name from its massive size and the large proboscis of the adult male, which is used to produce very loud roars, especially during the breeding season. A bull southern elephant seal is about more than twice the weight of a male northern elephant seal (Mirounga angustirostris) as large sub-adult southern elephant seals have weighed 3 tons, as well as more than twice the weight of a male pacific walrus (Odobenus rosmarus divergens).