The ocean floor is becoming a massive plastic dump, with debris accumulating in deep-sea canyons and harming marine life. Scientists warn that this hidden pollution, dominated by plastics and ghost fishing gear, poses a long-term threat to hundreds of species. Prevention is the only viable solution, as deep-sea cleanup is impractical.The ocean floor is becoming a massive plastic dump, with debris accumulating in deep-sea canyons and harming marine life. Scientists warn that this hidden pollution, dominated by plastics and ghost fishing gear, poses a long-term threat to hundreds of species. Prevention is the only viable solution, as deep-sea cleanup is impractical.