4 of 29


Located on Eil Malk island, Jellyfish Lake is an unusual marine lake that is poplated almost exclusively by two species of jellyfish: golden and moon jellyfish. Eil Malk is part of the Rock Islands, a group of small, rocky, mostly uninhabited islands in Palau’s Southern Lagoon, between Koror and Peleliu. Millions of golden jellyfish migrate horizontally across the lake daily. Although Jellyfish Lake is connected to the ocean through fissures and tunnels, the lake is sufficiently isolated and the conditions are different enough that the diversity of species in the lake is greatly reduced from the nearby lagoon.