Answer:

naiades

Answer	Crossword Clue
NAIADES	Water maidens
NAIADES	Fresh-water mussels.
NAIADES	Water nymphs.

NAIADES	Aquatic nymphs
NAIADES	Water nymphs

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.