The Jellyfish Lake is located on the uninhabited stone island of Koror in Palau. The Lake is one of the 70 saltwater lakes of the South Pacific, which had long been associated with the ocean, but are now cut off. It is famous for the millions of golden jellyfish that migrate horizontally throughout the lake.
An attraction of what one can only dream of, this incredible phenomenon departs from the conventional one; the self-contained system of water has, over the centuries, made the medusa evolve to lose their stinging spikes because they did not have the natural enemy they would have to protect. Instead, daydreaming sunbathing and worryingly floating on the surface of the lake, catching their only source of nutrition, algae.
The jellyfish lake is connected with the oceans through a variety of small tunnels, but it is still isolated enough for the conditions to be different to allow for a diverse life, which is different from the nearby lagoons. Golden jellyfish, as well as other inhabitants of this lake are in many respects different from the living world from nearby lagoons.
There are two types of jellyfish in this lake, the Moon Jellyfish and the Golden Jellyfish. Golden jellyfish is the closest species to those jellyfish inhabiting the nearby lagoons. The Moon Jellyfish is indeterminate as a rare Aurelia aurita. They spend most of their lives sunbathing on the surface of the water. Before sunset, the medallions are grouped along the western shore of the lake. Every morning, about 6 o’clock, when dawn is ebbed in the eastern sky, everything begins to swim to the sun’s rays. By pumping water through their stomachs, these jewels use a jet drive to track the sunlight movement all the way to the east coast and the shadow created by the nearby trees.
Swimming in the lake is safe and permissive, but diving is not because it can disrupt the ecosystem.
You would also like to keep it away from the hydrogen sulphide layer that floats at a depth of 15 to 20 meters.
All in all, one very interesting place!