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Biology

The Physiological Adaptations of Deep-Sea Fishes to Extreme Pressure

Quick fact

Deep-sea fish accumulate high concentrations of trimethylamine N-oxide (TMAO), a molecule that prevents their proteins from being crushed by pressure—the deeper they live, the more TMAO they produce.

Why this is interesting

We can barely dive 30 meters without pain, yet some fish thrive at depths where the pressure would crush a submarine. How do they survive?