Any one of numerous species of ducks which frequent the seacoasts and feed mainly on fishes and mollusks. The scoters, eiders, old squaw, and ruddy duck are examples. They may be distinguished by the lobate hind toe.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). sea duck. Retrieved September 28, 2026, from http://smartdefine.org/sea_duck/definitions/2059329 |
| Chicago | Webster's. 2011. "sea duck" http://smartdefine.org/sea_duck/definitions/2059329 (accessed September 28, 2026). |
| Harvard | Webster's 2011, sea duck, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/sea_duck/definitions/2059329>. |
| MLA | Webster's. "sea duck" 28 May 2011. Web. 28 September 2026. <http://smartdefine.org/sea_duck/definitions/2059329> |