When people say fish drown, they mean suffocation due to lack of oxygen, not lungs filling with water. (AI Generated)
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News1807-01-2026, 14:52

Fish Can Drown: The Surprising Science Behind Aquatic Suffocation Revealed

  • Fish 'drown' by suffocating due to lack of dissolved oxygen in water, not by water filling their lungs like humans.
  • They extract oxygen via delicate gills; disruption of this countercurrent exchange process leads to death.
  • Low dissolved oxygen in water (especially warm or stagnant water) and damaged gills are primary causes of suffocation.
  • Environmental factors like marine heatwaves, algae blooms, and pollution significantly reduce water's oxygen levels.
  • Scientific records confirm over 300 cases of fish dying from suffocation in water, as reported by Discover Wildlife, Live Science, and the University of Miami.

Why It Matters: Fish suffocate from lack of oxygen in water, a surprising truth confirmed by science.

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