Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. It’s been a wormy, sexual head-scratcher for years. The Japanese ...

In one of the strangest paths to reproduction, this tiny Japanese sea worm actually grows a ‘mini-me’ at its rear end, which it then deploys so it can swim off on its own in search of similar ...

Scientists have uncovered the genetic underpinnings of one of the ocean's most bizarre animals: a branching marine worm named Ramisyllis kingghidorahi that lives inside sea sponges and reproduces in a ...

Male stolen (right hand side): one of the independent reproductive units – growing at the tip of a branch of the worm’s body. It has sprouted eyes and will go swimming free to find a stolon of the ...