(February 12, 2020 at 6:41 pm)Mr Greene Wrote:(February 12, 2020 at 4:01 pm)Gawdzilla Sama Wrote: Like the moths in England that turned darker when their trees had heavy layers of soot and light again when the air cleared after the mills(?) were shut down.
Also eyes whilst beneficial in most environments are detrimental in permanently dark conditions with low nutrition due to the energy expended in growing them. Thus animals living in caves are under significant selection pressure to lose their eyes.
The blind cave fish of Yemin come to mind immediately. And there's the various varieties of manager slugs, a species that absorbs its legs in order to grow a butt that completely fills its swivel chair..