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Rare Giant Phantom Jellyfish Filmed Off Argentina in Deep-Sea Expedition

Researchers plan rigorous analyses of the expedition’s large sample set to confirm provisional discoveries.

Overview

  • Video captured by the Schmidt Ocean Institute’s ROV documented Stygiomedusa gigantea at roughly 250 meters depth along the Argentine continental margin.
  • The Falkor (too) cruise surveyed from Buenos Aires toward Tierra del Fuego, recording coral habitats and diverse deep-sea fauna.
  • Scientists reported about 28 presumptive new species, including worms, snails, and sea anemones, with identifications pending formal taxonomy.
  • Imagery revealed seafloor debris such as fishing nets, plastic bags, and a VHS cassette with Korean script in near-pristine condition.
  • The team also observed a whale fall at approximately 3,890 meters and collected extensive chemical, physical, and biological samples to assess ecosystem structure and vulnerability.