A large red jellyfish with a dome-shaped bell and ruffled tentacles against a dark ocean background.
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Big Red Jelly
A large, opaque Tiburonia granrojo or “big red jelly,” observed at a depth of 1,134 meters (3,720 feet) during the fifth dive of the Papahānaumokuākea ROV and Mapping expedition.
Credit

NOAA Ocean Exploration, 2025 Beyond the Blue