Cymothoa exigua is a parasite that severs the blood vessels of a fish’s tongue and becomes a new functional tongue. It is the only known parasite to replace an entire organ. – WTF Fun Facts
WTF Fun Fact – Cymothoa Exigua

Cymothoa exigua is a parasite that severs the blood vessels of a fish’s tongue and becomes a new functional tongue. It is the only known parasite to replace an entire organ. – WTF Fun Facts