"It's a good sign for the marine environment too, because it shows there are enough fish in the sea for the dolphins to eat, " he said.
BBC: Cardigan Bay dolphin survey marks 10 years
The computer model in the study builds on decades of research that shows that most species of fish, especially large ones, have maximum growth sizes based on the availability of oxygen in the water.
FORBES: Carbon Emissions Threaten The Fishing Industry By Shrinking Fish Sizes
The last remaining CCTV of Damien shows him at Yorkie's fish and chip shop in Cowes High Street at about 23:45 GMT.
BBC: Damien Nettles
The last remaining CCTV footage of Damien shows him at Yorkie's fish and chip shop in Cowes High Street at about 23:45 GMT.
Dr Hibbeln, however, says his work shows that the benefits of eating such fish vastly outweigh the risks from the mercury in them.
ECONOMIST: Diet and the unborn child
Like its movies, television shows and blue jeans, America's most popular fish has also been exported all over the globe.
FORBES: Long Reach Of The Largemouth
He shows off a bag full of papers and receipts from the last month of fish deliveries.
FORBES: Food & Dining
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