What animal has the longest gestation period? From salamanders to elephants, here’s how long it can take to make a baby.

Scientists have made a rare discovery off the coast of Portugal, where a frilled shark, a species that has remained nearly unchanged for 80 million years, was accidentally caught in a commercial ...

These rare deep-sea fish dwell 200 to 2,000 meters deep. The frilled shark, a rare deep-sea “living fossil,” resembles an eel and was spotted in 2007 near Japan's surface, possibly due to ...