The Mariana Trench is home to some weird deep sea fish, and they all have the same, unique mutations

Illustration of the earth and its oceans with different deep sea species that surround it,.

Fish that survive in extreme deep-sea environments have developed the same genetic mutation despite evolving separately and at different times, researchers say.

The scientists also found industrial chemicals in fish and in the ground in the Mariana Trench, meaning human-made pollutants can reach some of the deepest environments on Earth.