Description
Sea cows (Sirenia) look like whales because they lack hind legs, but they are mammals closer to elephants and Desmostylus. Sirenia currently comprise dugongs and manatees. Sea cows are herbivorous, which is unusual for aquatic mammals. They inhabit shallow waters because the aquatic plants they feed on are there for photosynthesis. Numata sea cows lived from 9.2 million to 7.3 million years ago. The name Numata kaigyu (Numata sea cow) is not an official Japanese name; it's something of a nickname. The scientific name is Dusisiren sp. Dusisiren is a genus, and the specific species is unknown.
Data source
Hokkaido Digital Museum
"Hokkaido Digital Museum," is a cross-search portal that aggregates information on facilities, materials, and artworks at museums and art galleries in Hokkaido
Contents holder/Provider
Aggregator
hokkaido
Hokkaido governement opened to the public the "Hokkaido Digital Museum," a cross-search portal site that collects information on museums, materials, and artworks from various museums and art galleries in Hokkaido and make it available as one-stop
Last updated
July 14, 2026