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How is the Baikal seal adapted to life in Lake Baikal?
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seal
Crabeater seal (Lobodon carcinophagus).
The Baikal seal (Pusa sibirica) is uniquely adapted as the only seal species that lives exclusively in freshwater, specifically within Lake Baikal in Siberia.12
Its adaptations for this environment include:
- Diving Capabilities: To hunt prey such as the longfin Baikal sculpin and golomyanka, the seal can dive to depths of 400 meters (1,300 feet) and hold its breath for up to 40 minutes.12
- Ice Navigation: During the winter, when the lake is covered in ice, the seals use their claws to cut breathing holes, allowing them to move between the water and the surface.12
- Reproductive Strategy: Females build dens in ice hummocks and snowdrifts on the lake surface to give birth and nurse their offspring, providing protection in the harsh climate.2
- Physiological Insulation: Like other seals, they possess a thick layer of blubber below the skin, which provides essential insulation against the cold, serves as a food reserve, and aids in buoyancy.3