Palau, Micronesis - Jellyfish Lake Mermaid
Mermaids can be found anywhere there is water, even unique places like isolated Jellyfish Lake on one of the rock islands in Palau. The jellyfish, long residents of this lake without natural preditors, no longer have stinging tenticles so bare-skinned humans can swim with them without being stung. And, it would see mermaids are likewise unharmed (here, American Christina Macfarlane).