First sighting of ramming behaviour in bumphead parrotfish during competition for females. Trespassers on the mating grounds of male bumphead parrotfish soon learn a hard lesson. The reef-munching ...

The Great Barrier Reef, which holds the healthiest bumphead populations along its outer reefs. "But one would have to be at the outer reef early in the morning, specifically trying to observe ...

Trespassers on the mating grounds of male bumphead parrotfish soon learn a hard lesson. The reef-munching fish fend off competing males using aggressive headbutting — a form of behaviour that has ...

Scientists diving in the North Pacific were jarred when they heard mysterious sounds like spear guns being fired. The jolting noises turned out to be never-before-seen (or heard) head-butting bouts ...