Deep-water buoyancySourced
A fish that floats with a jelly-like body
Psychrolutes marcidus lives in deep water under intense pressure. Much of its body is gelatinous tissue slightly less dense than water, helping it float above the seabed without relying on a gas-filled swim bladder.
Depth changes the engineering of staying afloat.
Summary / translation: Unbubly · CC BY-SA 4.0
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Psychrolutes marcidus · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-05