The mysterious Coelacanth.
According to the fossil record, coelacanth appeared 400 million years ago and was long considered extinct until rediscovery in 1938.
Coelacanth are marine animals that live in deep waters between 150 and 250 m. From their physiognomy, their lobed fins and symmetrical tail stand out. Of its internal anatomy, its oil-filled swimming bladder stands out, allowing it to withstand pressure at great depths.
The coelacanth has great evolutionary importance, because with the lunged fish, they are the closest living relatives of the terrestrial vertebrates.
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