List of marine mammals of Australia

This is the list of marine mammals found in Australian waters. It is a sub-list of the list of mammals of Australia.

Conservation status listed follows the IUCN Red List of Threatened Species (v. 2013.2; data current at 3 March 2014):

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|<div style="padding-left:1em; padding-right:5em;"> – extinct<br/>

– extinct in the wild<br/>

– critically endangered<br/>

– endangered<br/>

– vulnerable<br/>

– near threatened<br/>

– least concern<br/>

– data deficient<br/>

– not evaluated</div>

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Cetacea

Balaenidae

Southern right whale, Eubalaena australis

Balaenopteridae

Minke whale, Balaenoptera acutorostrata
Southern minke whale, Balaenoptera bonaerensis
Sei whale, Balaenoptera borealis
Pygmy Bryde's whale, Balaenoptera edeni
Omura's whale, Balaenoptera omurai
Blue whale, Balaenoptera musculus (ssp. brevicauda – pygmy blue whale: , ssp. intermedia: )
Fin whale, Balaenoptera physalus
Humpback whale, Megaptera novaeangliae (Oceania subpopulation: )

Delphinidae

Short-beaked common dolphin, Delphinus delphis
Pygmy killer whale, Feresa attenuata
Short-finned pilot whale, Globicephala macrorhynchus
Long-finned pilot whale, Globicephala melas
Risso's dolphin, Grampus griseus
Fraser's dolphin, Lagenodelphis hosei
Hourglass dolphin, Sagmatias cruciger
Dusky dolphin, Sagmatias obscurus
Southern right whale dolphin, Lissodelphis peronii
Irrawaddy dolphin, Orcaella brevirostris
Australian snubfin dolphin, Orcaella heinsohni
Orca (killer whale), Orcinus orca
Melon-headed whale, Peponocephala electra
False killer whale, Pseudorca crassidens
Indo-Pacific humpback dolphin, Sousa chinensis
Pantropical spotted dolphin, Stenella attenuata
Striped dolphin, Stenella coeruleoalba
Spinner dolphin, Stenella longirostris
Rough-toothed dolphin, Steno bredanensis
Indo-Pacific bottlenose dolphin, Tursiops aduncus
Burrunan dolphin, Tursiops australis (T. truncatus: , T. aduncus: )
Bottlenose dolphin, Tursiops truncatus

Kogiidae

Pygmy sperm whale, Kogia breviceps
Dwarf sperm whale, Kogia simus

Neobalaenidae

Pygmy right whale, Caperea marginata

Phocoenidae

Spectacled porpoise, Phocoena dioptrica

Physeteridae

Sperm whale, Physeter macrocephalus

Ziphiidae

Arnoux's beaked whale, Berardius arnuxii
Southern bottlenose whale, Hyperoodon planifrons
Longman's beaked whale, Indopacetus pacificus
Andrews' beaked whale, Mesoplodon bowdoini
Blainville's beaked whale, Mesoplodon densirostris
Ginkgo-toothed beaked whale, Mesoplodon ginkgodens
Gray's beaked whale, Mesoplodon grayi
Hector's beaked whale, Mesoplodon hectori
Strap-toothed whale, Mesoplodon layardii
True's beaked whale, Mesoplodon mirus
Shepherd's beaked whale, Tasmacetus shepherdi
Cuvier's beaked whale, Ziphius cavirostris

Sirenia

Dugongidae

Dugong, Dugong dugon

Carnivora

Pinnipedia

Otariidae

Australian fur seal, Arctocephalus pusillus
New Zealand fur seal, Arctocephalus forsteri
Antarctic fur seal, Arctocephalus gazella
Subantarctic fur seal, Arctocephalus tropicalis
Australian sea lion, Neophoca cinerea

Phocidae

Leopard seal, Hydrurga leptonyx
Weddell seal, Leptonychotes weddellii
Crabeater seal, Lobodon carcinophaga
Southern elephant seal, Mirounga leonina
Ross seal, Ommatophoca rossii