Female pipefish face toughest odds

In the world of pipefish, which are cousins of sea horses, sexual selection may reverse in the most dramatic way yet recorded.

A Gulf pipefish embryo like this one develops inside dad, not mom. Jones

Biologists have most often talked about sexual selection as a force driving males to evolve lures for females. Now, Adam G. Jones from Oregon State University in Corvallis says the Gulf pipefish, Sygnatha scovelli, breaks the pattern.