Someone
Millions of years ago, jellyfish were trapped in lake palau after a submerged reef rose from the sea, creating a landlocked saltwater lake. with not alot of predators the jellyfish have adapted to the new conditions by losing their sting. They have eight primitive eyes and algae that live within their cells. These algae are what the jellyfish live on. Twice each day, the jellyfish in the lake swim from one side to the other. The jellyfish do this to get sunlight to their internal algae so that the algae can grow. At night the jellyfish swim to a lower depth where the water is rich in nitrogen. The nitrogen also sustains the algae population. The jellyfish has only one main predator in this lake -- the sea anemone. Jellyfish can be stung, trapped, and killed by these creatures.
They live by photosynthesis because they cannot feed on anything in this lake. This lake is such a heaven to them that there are just so many of them living here.









