merman

A legendary sea creature having the head and upper body of a man and the tail of a fish.

A fabulous man of the sea, with the lower part of the body that of a fish.

In heraldry, same as triton.

The male corresponding to mermaid; a sea man, or man fish.

A legendary creature, human male from the waist up, fishlike from the waist down.

United States singer who appeared in several musical comedies (1909-1984)

half man and half fish; lives in the sea