To and Fro Motion of Seas According to the Moon

This page is the CodyCross answer for the clue below from Performing Arts, Group 894, Puzzle 3 (Understudy).

Question is: To and Fro Motion of Seas According to the Moon

and the answer is: TIDALFLOW

Word Meaning:

TIDAL — Relating to tides.

Definitions from Wiktionary.