We would have to close our eyes to many observed affects of the lunar cycle and lunar phases that can be seen in numerous life forms. For example, shellfish renew their shells, undergo regeneration and sexual activity in accord with the lunar tidal cycle. Guppy-fish have a color sensitivity on their back that is most responsive during Full Moon, and least responsive at New Moon. The Golden Hamster displays lunar rhythms in activity, and urinary volume and acidity. . The Moon has been a boon to hunters and fishermen.
Sea creatures show a high lunar sensitivity.
Their reproductive cycles are affected by the rhythms of the Moon. Exact lunar rhythms have been demonstrated in the reproductive cycles of fish. Oysters open their shells at high tide. Shrimpers are out in masse every full moon, because at this time they predictably rise to the surface to feed. It seems natural that sea creatures would be most affected because of ocean tides.