This one is hard to believe, but maybe not. Some "new age" foolishness like rubbing stones on one's body and claiming the rash that forms consists of toxins coming out, instead of what it really is, broken capillaries, is relatively harmless, like homeopathic "medicine". However, birthing one's baby underwater is unsanitary, exposes it to harm from aspiration of fecal matter among other things, and doing so in the presence of a large carnivorous mammal is the height of stupidity. But Flipper is our friend! Well, lets hope he's well fed.
I predict this practice may well come to an unfortunate and abrupt end in the near future.