A strange marine worm with regenerating butts named after Godzilla’s brutal enemy

Newly discovered branched sea worm Ramisyllis kingghidorahi. In this image, worms with a single head (left) and unequal posterior branches (right) are clearly visible. (Photo credit: M Aguado)

A new species of branching seaworm has dozens of regenerating hind limbs that separate and swim during reproduction. This strange superpower led the monster discoverers to name it after Godzilla’s monstrous multi-headed enemy, King Ghidorah.

In total, 25 new worms were named Ramisyllis kingghidorahi After the evil kaiju, she was found living inside a sea sponge in Japan in October 2019. Unlike her namesake, who has three heads and tails, R. kingghidorahi It has only one head but has many hind branches, which grow to fill the narrow tubes within the host sponge, which are between 2 and 4 inches (5 and 10 cm) long.

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