BBC Earth News, September 2010
“Shark Bay dolphins are known as clever inventors, showing a remarkable range of foraging tactics, which are unprecedented in other cetacean populations,” says biologist Dr Michael Krützen of the University of Zurich, Switzerland.
https://news.bbc.co.uk/earth/hi/earth_news/newsid_8975000/8975919.stm
https://news.bbc.co.uk/earth/hi/earth_news/newsid_8975000/8975919.stm