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Rare Giant Phantom Jellyfish Discovered Off Argentina

2/7/2026

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Summary

Story summary

In December 2025, researchers aboard the R/V Falkor off Argentina encountered a giant phantom jellyfish at 800 feet.
María Emilia Bravo, a marine biologist from the University of Buenos Aires, led the dive.
Giant phantom jellies are seldom seen alive and are usually found dead in trawling nets.
The jellyfish can exceed three feet in diameter and have arms up to 30 feet, indicating large, previously undocumented deep-sea life.

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Story summary

In December 2025, researchers aboard the R/V Falkor off Argentina encountered a giant phantom jellyfish at 800 feet.
María Emilia Bravo, a marine biologist from the University of Buenos Aires, led the dive.
Giant phantom jellies are seldom seen alive and are usually found dead in trawling nets.
The jellyfish can exceed three feet in diameter and have arms up to 30 feet, indicating large, previously undocumented deep-sea life.