Jellyfish Lake is the only place in the world where you can safely swim amongst millions of jellyfish because the sometimes deadly creatures have lost their sting.
The lake, based on the Pacific island of Palau, was once connected to the Pacific Ocean but when the sea level dropped jellyfish became isolated in the algae rich lake. With no risk of being eaten by predators the jellyfish population thrived and there is now estimated to be up to eight million jellyfish living in the lake. Over time their stings weakened and these amazing images show tourists can now swim alongside the jellyfish without fear of being stung.
