An Aussie spear fisherman has revealed how an eerie vision during a vicious shark attack gave him the strength to fight back and survive. Glenn Dickson, 33, was gripped by a 3.5-metre bull shark ...

the researcher pondered. While sperm whale sightings are rare, their sounds are heard far and wide as they can reach over 200 decibels underwater– the loudest animals on Earth. They also highly rely ...