Located on an uninhabited rock island off the coast of Koror in Palau, Jellyfish Lake is one of 70 saltwater lakes on this South Pacific archipelago that were once connected to the ocean, but are now cut off.
The isolated lakes became the perfect setting for a jellyfish explosion, which some speculate were trapped in the lake 12,000 years ago after a rise in sea levels post-Ice Age. Feeding on quick-growing algae and with no predators to keep them in check, the jellyfish now completely pack the small lake. Though the jellyfish do have stingers, they are too small to be felt by humans.
(Description from http://www.atlasobscura.com/)
Filmed with GoPro Hero 3 Black . Cut and graded with Final Cut Pro X.