That sounds pretty logical being that the oceans are affected by the moon and some of the creatures would develop a sensitivity to the pull of the moon(tides), internal clock, and possibly use that as a means of travel and/or guidance system.

Regards,
Lobo-hotei
lobo

Treat the earth well, It was not given to you by your parents, It was loaned to you by your children.
Native American Proverb