Damn Nature U Pretty of the Day: Sarosh Jacob goes for a dip in Jellyfish Lake on the island of Eil Malk, Palau.

Twelve thousand years ago these jellyfish became trapped in a natural basin on the island when the ocean receded. With no predators amongst them for thousands of years, they evolved into a new species that lost most of their stinging ability as they no longer had to protect themselves. They are pr