12 Mind-Blowing Deep-Sea Creatures You Won’t Believe Exist

9. Sea Pig: Ghostly Clean-Up Crew of the Abyss

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Sea Pigs (Scotoplanes globosa) roam abyssal plains deeper than 1,000 meters, recycling “marine snow” that drifts from above. Their jelly-like, pink bodies ride on many tube feet, which leave tell-tale tracks while sensing food and terrain. When a whale fall or other feast appears, hundreds may converge, proving their keen chemical sensing and ecological value. Thought to spawn into open water, they remain mysterious icons of nutrient cycling in the deep.