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Baikal seal - Wikipedia
Freshwater seal - Wikipedia
Baikal Seal - Facts, Diet, Habitat & Pictures on Animalia.bio
Baikal Seal (Pusa sibirica) - Pinnipeds
Discovering Lake Baikal's unique freshwater seals - Encyclopedia Britannica
Baikal seal: habitat, behavior, and threats | Britannica
ADW: Pusa sibirica: INFORMATION
Fast and smart - meet Lake Baikal's unique nerpa seal
Lake Baikal, home of the freshwater Baikal seals - Slate Magazine
GNF - Baikal Seal in Focus - Global Nature