Palau is a state, independent since 1994, in the Pacific Ocean and is about 500km from the Philippines.
The state, which is part of Micronesia is an archipelago of 200 islands of volcanic or coral origin.
In Palau, as in Kakaban Island in Indonesia ( https://www.crotzthewolf.com/sangalaki-2005-nuovi-incontri/ ) , there is a salt water lake that hosts a large colony of jellyfish harmless to humans.
https://www.crotzthewolf.com/portfolio/palau-micronesia-2008/