Between 2007 and 2011, Scottish scallop fishermen harvested more than 78,000 tonnes and earned nearly £150 million.
The boats drag large metal rakes across the seabed to scoop the scallops out of the sand. Some 98% of scallops are harvested this way, with the rest individually plucked by divers. More than 80% are exported to Europe. Scallops are large fan-shaped shellfish found all around our shores, out to depths of 180 metres, and can grow up to 17cm wide.