Cool save. Back in the 80s, I caught a female bat ray that aborted her pregnancy when I hauled her up on the pier. 2 were stillborn and 2 survived that I put in my SW pond. One was nearly white (underdeveloped) and the other was dark gray. The white one died less than 24 hours later. The other grew to 3 1/2 ft wingspan before I had to give him away when I received orders that took me across country.
thats pretty cool, shame the white one didnt make it

if your snakes did nothing but sit ther, you were doing something wrong. given a natural enclosure most snakes activity levels will be amazingly different than one in a bland, sterile enclosure