Video shows rare deep-sea eel inflating like a balloon
Scientists aboard an underwater exploration vehicle Nautilus captured a rare 'gulper eel' inflating its mouth like a balloon at a depth of 1,425 metres in Hawaii. "That pouch-like mouth can inflate in an instant, scooping up much larger prey like a pelican," the team said. "This gulper was a juvenile, as they can grow up to three feet," they added. 