A mythological creature with a woman's head and upper body, and a tail of a fish. / (as a modifier) Coloured a brilliant turquoise. / (obsolete) A prostitute.

plural of mermaid

The practice of swimming while wearing an artificial mermaid tail.

The egg case of a skate, shark or ratfish.

sirenomelia

plural of mermaid's purse

Chorda filum, a brown alga.

A long skirt which is tight-fitting from the waist to below the knees, before flaring out at the bottom.

(colloquial) Small plastic pellets, or nurdles, found as marine pollutants.

(cryptozoology) A mythical creature, woman from the waist down, fish from the waist up.