It’s easy to assume that teeth always grow inside mouths, yet a new study has revealed that some animals – such as the spotted ratfish (Hydrolagus colliei) – grow them elsewhere. Sometimes referred to as ‘ghost sharks’, adult male spotted ratfish have strange-looking hooked protrusions that appear on a head structure called the tenaculum, which the fish use to grasp …
Read More »‘Ghost sharks’ are lurking off the coast of Washington – and they have teeth growing out of their foreheads
