Many substances and elemental energies that aren't soluble on Earth were brought over by the Alien Race across dimensions.
Secondly, Earth's own pollution is quite severe, with the marine ecosystem already being seriously damaged.
He observed on many deep sea fish an accumulation of toxins forming tumors, with radioactive dark green fluid flowing in their flesh.
In the ocean trench crevices, he found war machinery remnants piled up like mountains.
This was clearly due to the decision during the war to bury these pollutants directly in the sea, as they couldn't be cleared.
Unknown elements released from these war remnants combined with Earth's water molecules, generating corrosive purple mucus.
This resulted in different degrees of radiation mutation in marine life.
In the coastal areas near human cities, the situation is even more complex.
