When marine biologist Scott Gardner was swimming back to his boat after a dive on the Great Barrier Reef, he heard a strange cracking sound and grabbed his camera just in time to snap some photos of a green wrasse (also known as a tuskfish) smacking a small cockle against a rock to get at the meat inside.
While scientists have known for about 50 years that a few dozen species of fish use rocks as tool-like implements, this was the first time it had been witnessed up close and recorded with a camera.
http://news.yahoo.com/amazing-photos-fish-uses-rock-tool-144402281.html
http://www.lifeslittlemysteries.com/fish-rock-tools-photos-1872/
While scientists have known for about 50 years that a few dozen species of fish use rocks as tool-like implements, this was the first time it had been witnessed up close and recorded with a camera.
http://news.yahoo.com/amazing-photos-fish-uses-rock-tool-144402281.html
http://www.lifeslittlemysteries.com/fish-rock-tools-photos-1872/
