Snorkeler with golden jellyfish (Mastigias papua etpisoni), in Jellyfish Lake, a marine lake located on Eil Malk island, Rock Islands, Palau, Micronesia, Pacific

Snorkeler with golden jellyfish (Mastigias papua etpisoni), in Jellyfish Lake, a marine lake located on Eil Malk island, Rock Islands, Palau, Micronesia, Pacific

Golden jellyfish (Mastigias papua etpisoni), in Jellyfish Lake, a marine lake located on Eil Malk island, Rock Islands, Palau, Micronesia, Pacific

Golden jellyfish (Mastigias papua etpisoni), in Jellyfish Lake, a marine lake located on Eil Malk island, Rock Islands, Palau, Micronesia, Pacific

Snorkeler with golden jellyfish (Mastigias papua etpisoni), in Jellyfish Lake, a marine lake located on Eil Malk island, Rock Islands, Palau, Micronesia, Pacific

Stingless jellyfish (Mastigias sp.), Jellyfish Lake, Palau, Caroline Islands, Micronesia, Pacific Ocean, Pacific

Stingless jellyfish (Mastigias sp.), Jellyfish Lake, Palau, Caroline Islands, Micronesia, Pacific Ocean, Pacific

Sunrays illuminate a jellyfish, Mastigias sp., Jellyfish Lake, Kakaban Island, Berau, Kalimantan, Borneo, Indonesia, Pacific Ocean

A smiling female diver among the golden jellyfish (Mastigias papua) of Jellyfish Lake, on the island of Eil Malk (Republic of Palau, Micronesia).

Sunrays illuminate a jellyfish, Mastigias sp., Jellyfish Lake, Kakaban Island, Berau, Kalimantan, Borneo, Indonesia, Pacific Ocean

Mastigias Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Skin Diving with harmless Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Woman in Jellyfish Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish in Jellyfish Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Swimming with Jellyfishes, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Free diving in Jelly Fish Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Swimming with harmless Jellyfishes, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish in Jellyfish Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish in Jellyfish Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish in Backlight, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Anemone feed Jellyfish, Entacmaea medusivora, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Jellyfish in Marine Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Endemic Mastigias Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Jellyfishes in Marine Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Jellyfishes in Marine Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Anemone feed Jellyfish, Entacmaea medusivora, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Jellyfish in Marine Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish in Backlight, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Jellyfish in Marine Lake, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Mastigias Jellyfish in Backlight, Mastigias papua etpisonii, Jellyfish Lake, Micronesia, Palau

Black water and Jellyfish (Mastigias papua) of Lenmakana lake. This lake is isolated from the rest of the ocean by ramparts several tens of meters high. It is connected to the ocean by terrestrial channels but it prevents the entry and exit of living organisms. These jellyfish have therefore found refuge in what is for them a haven of peace. They have proliferated to reach millions of people. Misool, Rajat Ampat, Indonesia

Jellyfish (Mastigias papua) of Lenmakana lake. This lake is isolated from the rest of the ocean by ramparts several tens of meters high. It is connected to the ocean by terrestrial channels but it prevents the entry and exit of living organisms. These jellyfish have therefore found refuge in what is for them a haven of peace. They have proliferated to reach millions of people. Misool, Rajat Ampat, Indonesia

Flying Jellyfish (Mastigias papua) of Lenmakana lake. This lake is isolated from the rest of the ocean by ramparts several tens of meters high. It is connected to the ocean by terrestrial channels but it prevents the entry and exit of living organisms. These jellyfish have therefore found refuge in what is for them a haven of peace. They have proliferated to reach millions of people. Misool, Rajat Ampat, Indonesia