sea cow 
noun
A sirenian, especially a manatee.Already the Steller's Sea Cow has been hunted into extinction by humans....
- The sea cow, a relative of the manatee, is proof that tasting good can be hazardous to a species' health.
- fair-sized
- fairskin
- fair-skinned
- fair speaking
- fair-spoken
- fair-tongued
- fair-top boot
- fair trade
- fair-trade agreement
- fair-traded
- fair trade law
- fair trader
- fair trading
- fair use
- fair-walling
- fairwards
- fairwater
- fairway
- fair-weather
- fair-weathered
- fair-weather friend
- fairy
- fairy armadillo
- fairy arrow
- fairy basslet