Drastically reduced populations of blue fin tuna, sharks and other large fish predators indicate that the world’s oceans are in trouble and must be more carefully managed, a Canadian marine biologist said recently at the University of Rhode Island.
Noting that oceans produce 50% of the oxygen humans breathe – and absorb 40 to 45% of the carbon dioxide humans produce – Boris Worm, a professor at Dalhousie University in Halifax, Nova Scotia, called for reduced fishing to protect marine biodiversity. He also condemned wasteful practices, like shark finning…