re: #701 Spar Kling

So, I read up on them, but I was skeptical and I didn’t believe the description of “depression.”

I didn’t know what a hydra was, so I googled. I hope in high school, you weren’t under the impression that your poor hydra were merely “sad”, lol.

The phenomenon of depression, in which there is a shortening and gradual loss of tentacles and column from the distal end proximally, is of common occurrence in hydras and probably represents a lowered metabolic state. It is induced by rich feeding, high temperature, sensescence, fouling of the culture water, lack of oxygen, transfer to clean fresh water. Recovery may be spontaneous or may by induced.