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Steller’s sea cow
Meet steller’s sea cow—one more extraordinary life to discover.
Discover the expedition atlasA reference overview
Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia; its range extended across the North Pacific during the Pleistocene epoch, and likely contracted to such an extreme degree due to the glacial cycle. It is possible that indigenous populations interacted with the animal before Europeans.
Overview excerpt from Wikipedia contributors · Steller's sea cow, under CC BY-SA 4.0. Excerpt may be shortened. Overview retrieved 2026-10-09.