The measure of salt greatly depends on the size of the tunnel or crack connecting it to the sea.
[1] Due to the specific level of salt in the water, and the fact that the lakes are so secluded, marine lakes house a large amount of unique species, often found nowhere else on the planet.
Destruction of one such lake means that many species can become extinct with it.
[2] A notable marine lake is Ongeim’l Tketau, in Palau, known for its vast numbers of jellyfish, to which it owes its nickname, Jellyfish Lake.
[3] Marine lakes are vulnerable to threats from human activities and climate change.