Jellyfish Lake

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All about Jellyfish Lake dive site

Depth max

20 m

Diver level

Novice

Visibility

to 25 m

Jellyfish Lake is a very popular destination for snorkelers from all over the world. The lake is situated deep in Rock Island. This lake used to be connected to the ocean, but now it is secluded, except for the seawater that percolates into the lake through fissures and tunnels in the limestone cliffs. Snorkeling is safe as long as divers stay away from the unsafe hydrogen sulfide layer that hovers between 15 -20m/49-65ft deep. To reduce the risk of hydrogen sulfide poisoning scuba diving is prohibited here

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What to see

There are about two million jellyfish (including moon and golden species), whose sting is not detectable on most human tissue so snorkelers will be delighted with the dive. During the day the jellyfish come after the movement of the sunlight, which feeds the algae they survive on

When to go diving in Jellyfish Lake

Diving is available all year long, though the high season is between November and May. The average water temperature ranges between 26-29°C/78-84°F