A lake filled with jellyfish with no predators amongst, so they evolved into a new species that lost most of their stinging ability as they no longer had to protect themselves. Here's a video of Sarosh Jacob swimming around in the lake.
A lake filled with jellyfish with no predators amongst, so they evolved into a new species that lost most of their stinging ability as they no longer had to protect themselves. Here's a video of Sarosh Jacob swimming around in the lake.