It sounds like something out of science fiction: a fish that breathes air, buries itself in the mud, and survives years without water or food. But the African lungfish (Protopterus annectens) is very real — and one of the most bizarre creatures in the animal kingdom.
This fish lives in parts of Sub-Saharan Africa where rivers and lakes completely dry out during the dry season. To survive, the lungfish enters a state called estivation — similar to hibernation — slowing its metabolism to near-zero levels.
According to this report published by Pravda.ru, the lungfish can survive up to 4 years encased in a cocoon of dried mucus, breathing only through its lungs and conserving every bit of energy.
| Behavior | Purpose | What’s amazing |
|---|---|---|
| Buries into wet mud | Escapes drought conditions | Can survive up to 4 years |
| Secretes a mucus cocoon | Prevents dehydration | Breathes only through lungs |
| Stays motionless for months | Conserves energy | Metabolism almost shuts down |
In 2010, scientists revived a lungfish that had been dormant in dried mud for 5 years. Within 48 hours, it resumed swimming and eating — astonishing researchers around the world. Nature, it seems, always finds a way.
The African lungfish isn’t just a curiosity — it’s a living link between aquatic life and the first vertebrates to crawl onto land hundreds of millions of years ago. A time capsule from evolution itself.
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