# Deep-sea crustacean uses aluminium shield to survive Mariana Trench

2026-08-08T21:41:14+00:00 | World & Diplomacy | Indian Opinion Desk

Corroboration: 1 independent outlet

Scientists have discovered how the amphipod *Hirondellea gigas* survives the crushing pressure of the Mariana Trench, nearly 11,000 metres deep. A study published in *PLOS ONE* found the shrimp-like creature secretes a gel containing aluminium that coats its exoskeleton, preventing calcium carbonate from dissolving under pressure. The aluminium is extracted from seafloor sediments using gluconic acid produced by the animal. Researchers collected specimens from the Challenger Deep, the ocean’s deepest point, where pressure exceeds 1,000 atmospheres. When the aluminium coating was removed, the shell dissolved rapidly. The compound also protected salmon roe in lab tests, suggesting potential applications. This is the first known instance of aluminium being used as a natural structural component in a crustacean.

## Coverage

- timesofindia.indiatimes.com <https://timesofindia.indiatimes.com/science/scientists-uncover-the-aluminium-shield-that-helps-a-tiny-crustacean-survive-darkness-near-freezing-water-and-crushing-pressure-in-the-mariana-trench/articleshow/133054418.cms>

Tags: aluminium shield, crustacean, deep sea adaptation, Hirondellea gigas, Mariana Trench, PLOS ONE
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