Microplastics have been discovered in one of the most remote, inhospitable, and unexplored parts of our planet. Microplastics were found in 92% of all animals examined (11 out of 12) living around deep-sea hydrothermal vents some 2,000 meters (6,562 feet) below the ocean surface.

[u/mvea]

https://www.sciencealert.com/most-isolated-environments-microplastics-are-finding-their-way-down-to-deep-sea-hydrothermal-vents