This would be the idea of a nightmare for most swimmers, but this guy happily spent time underwater swimming with millions of jellyfish.
He weaves his way through the water as a seemingly endless number of the transparent beasts head towards him.
The stunning footage of the surreal swim was shot near the remote island of Palau last month in a place called Jellyfish Lake.
The lake is located on Palau in the South Pacific, where tourist are allowed to swim but not scuba dive with the animals.
Thankfully, although these jellyfish do have stingers they are too small to be felt by humans.
They take part in a daily migration following the arch of the sun to feed on the algae which they survive on, reports the Daily Mirror.
The daily movement also benefits the lake as they churn the nutrients and small organisms that form the base of the lake's food chain.
The man who took the footage said: 'A place like Palau's Jellyfish Lake is a reminder of how wondrous the world can be.
'Swimming with literally millions of jellyfish was absolutely surreal. A reminder that there will always be surprises out there.'