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BBC | English.

Jannis Athinaios is preparing to sell his merchandise, an assortment of fresh red mullets, red snappers, white sea bream and blunt-snouted mullets, at the sun-washed port of Nea Makri, a coastal town 25km northeast of Athens.

For 31 years he has been fishing in the South Euboean Gulf, mainly at night, heading to Nea Makri's port at noon to sell his catch, either to local restaurants or his many loyal clients.

"I use small nets," Mr Athinaios says. "Occasionally, I lose some of them, but nothing special - about 10m (32ft) per year, which costs me about €20," he says.

But imagine those lost nets scaled-up to the size of the giant nets used by ocean going trawlers.

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