Genus Somateria is a scientific classification of certain bird species. However, there are several synonyms for this term, which are used by people when referring to these particular birds. The most common synonyms for Genus Somateria are Eider Ducks, Sea Ducks, or Marine Ducks. These terms are used interchangeably to describe the distinctive group of ducks that inhabit the oceans and seas around the world. Eider Ducks are particularly known for their unique plumage and are sought after for their feathers, which are used to make high-quality down quilts and jackets. Sea Ducks are often found in the Arctic regions and are essential to the ecosystem of the surrounding area, as they play a vital role in the food chain.