Steller’s sea cow

The extinction of this 9-meter (30 ft) sea mammal is a wake-up call for those who believe the ocean has unlimited replenishing species


Steller’s sea cow

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The extinction of this 9-meter (30 ft) sea mammal is a wake-up call for those who believe the ocean has unlimited replenishing species

Population

Steller’s sea cow, named after the naturalist Georg Wilhelm Steller, who first documented it in the 18th century, represents one of the most tragic tales of discovery leading to extinction in the annals of natural history. This colossal marine mammal, with an estimated mass of 11 tons and lengths reaching up to 10 meters, was a gentle giant of the seas, spending much of its time serenely floating in the cold waters of the North Pacific, specifically around the Commander Islands.

Steller’s observations provided the only scientific account of these animals in their natural habitat, portraying them as social creatures that congregated in groups. Their peaceful and unhurried existence, however, made them easy targets for hunters and sailors who, shortly after the species was described, began to hunt them extensively. The appeal of Steller’s sea cow was not just limited to the novelty of its discovery; its meat was highly prized for its delicious taste, a fact that Steller himself noted, leading to a frenzied hunt for these animals by those who ventured into their remote habitats.

Moreover, the fur trade, thriving during this period, found another commodity in Steller’s sea cow. The thick blubber underneath their skin, while providing insulation to the animals in the cold northern waters, became a coveted resource for fur merchants. This blubber was processed into oil, which was found to be used in lamps and cooking, further intensifying the hunting pressure on the population. The exploitation was so intense that, incredibly, within approximately 30 years of their discovery, Steller’s sea cow was hunted to extinction.

Distribution

Country
Population est.
Status
Year
Comments
Bering sea
0
Official estimate
EX
2016
Extinct locally
Pacific ocean
0
Official estimate
EX
2016
Extinct locally
Russia
0
Official estimate
EX
2016
Extinct locally
United States
0
Official estimate
EX
2016
Extinct locally

Did you know?

  • Only sirenian known to have lived in cold waters.

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Terrestrial / Aquatic

Altricial / Precocial

Polygamous / Monogamous

Dimorphic (size) / Monomorphic

Active: Diurnal / Nocturnal

Social behavior: Solitary / Pack / Herd / Group

Diet: Carnivore / Herbivore / Omnivore / Piscivorous / Insectivore

Migratory: Yes / No

Domesticated: Yes / No

Dangerous: Yes / No