Up to 10,000 salmon with an average weight of 2.1 kilos may be missing from one of Leroy's fish farms, Public Affairs Manager Krister Hoaas told IntraFish.

A hole in the cage net was discovered Tuesday at a farm in Omsoyholman, Hitra.

"All routines in such cases were followed and the hole was closed immediately after it was observed," said Hoaas, but counting -- which is fraught with uncertainty -- revealed a possible sizeable escape.