Which Marine Mammals Are Considered Rare?

Several marine mammals are critically rare or endangered, facing threats from human activity and environmental change.

Notable Examples

Vaquita: This small porpoise lives in the Gulf of California and is the world's most endangered marine mammal, with only about 10 individuals remaining. Illegal fishing and habitat loss are primary threats.

North Atlantic right whale: With roughly 400 individuals left, this baleen whale is endangered by ship strikes, fishing gear entanglement, and habitat loss.

Southern right whale: Found in the Southern Ocean, this species numbers around 10,000 but remains threatened by historical whaling, ship strikes, and entanglement.

Blue whale: The largest animal ever to exist, reaching up to 100 feet and 200 tons, the blue whale inhabits oceans worldwide and faces threats from whaling and ship strikes.

Fin whale: The second-largest animal ever, growing up to 80 feet and 100 tons, the fin whale is also threatened by whaling and ship strikes.