Marine Mammal Commission

Marine Mammal Species and Populations of Concern

A central focus of our mission is to ensure marine mammals are restored and maintained as functioning elements of healthy marine ecosystems. We pay special attention to marine mammal species and populations considered to be most vulnerable to human activities, at greatest risk of extinction, or in greatest conflict with people. Please visit our species pages below to learn more about what we do to promote species management and conservation. For a more complete list on the conservation status of marine mammal species and populations, please visit our species listings page.

North Atlantic Right Whale

Eubalaena glacialis

North Pacific Right Whale

Eubalaena japonica

Hawaiaan monk seal

Hawaiian Monk Seal

Neomonachus schauinslandi

A cluster of bottlenose dolphin dorsal fins breaking the sea surface

Barataria Bay Bottlenose Dolphins

Tursiops truncatus truncatus

Florida manatee, Crystal River National Wildlife Refuge

Florida Manatee

Trichechus manatus latirostris

Northern Gulf of Mexcio Bryde's/Rice's whale surfacing (NOAA SEFSC Permit No. 779-1633-00)

Rice's Whale

Balaenoptera ricei

False killer whale.

Hawaiian Islands False Killer Whale

Pseudorca crassidens

A young western gray whale off the coast of Sakhalin Island, Russia

Western North Pacific Gray Whales

Eschrichtius robustus

Polar bear, Hornsund, Greenland

Polar Bear

Ursus maritimus

Sea otters, Alaska

Northern Sea Otter

Enhydra lutris kenyoni

A southern sea otter settles down to rest in a small patch of Egregia feather boa kelp

Southern Sea Otter

Enhydra lutris nereis

Beluga whale.

Cook Inlet Beluga Whale

Delphinapterus leucas

Vaquita swimming with head cresting above water.


Phocoena sinus

Southern Resident killer whale

Southern Resident Killer Whale

Orcinus orca

Inia geoffrensis, commonly known as the Amazon river dolphin, is a freshwater river dolphin endemic to the Orinoco, Amazon.

Freshwater Dolphins and Porpoises

Mediterranean monk seal, Monachus monachus

Mediterranean Monk Seal

Monachus monachus

Pacific Walrus

Odobenus rosmarus divergens