'Ghost sharks' are lurking off the coast of Washington – and they have teeth growing out of their foreheads - BBC Wildlife Magazine

1. 'Ghost sharks' are lurking off the coast of Washington – and they have teeth growing out of their foreheads  BBC Wildlife Magazine
2. 'Ghost sharks' grow forehead teeth to help them have sex, study suggests  Phys.org
3. This Gloriously Weird Fish Has Teeth on Its Forehead for Sex  Scientific American
4. This common fish has an uncommon feature: Forehead teeth, used for mating  UW Homepage
5. Freaky Ratfish Have Teeth Growing Out Of Their Foreheads, And They Use Them For Love  IFLScience