Deep-sea fish like lanternfish produce light through bioluminescence from symbiotic bacteria.
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Animals
Bioluminescence is a survival tool for many deep-sea creatures. Lanternfish and others use light produced by symbiotic bacteria residing in their bodies. This glow helps them attract prey, evade predators, and communicate in the dark depths of the ocean where sunlight does not penetrate. Different species have evolved various patterns for this biological phenomenon, revealing the complexity of life far below our ocean's surface.