I'm sure the stuff that happens at full moon (more babies born, more murders committed, more people dancing naked in the woods thinking they are Napoleon) because although the water mass isn't that great, the moon still has an effect on it... it's even named after the moon - lunacy

I know that it affects me a great deal, I'm always that bit happier at full moon. Looking back, most of my worst depressive episodes have been at new moon, but I'm not a lunatic, I have the certificate to prove it.

LTS