The pollack is a member of the Cod family and has a typical cod shaped body with three dorsal and two anal fins. The lower jaw protrudes, but unlike many members of the cod family, it does not have a chin barbel. This fish has silver sides and head while its back is greenish-brown. There is a distinctive curve in the lateral line above the pectoral fin region. Adult fish can grow to 1.3m in length but most are approximately 50cm.
Shoals of pollack are often encountered in rocky dive sites along the Cork coast or near wrecks outside Cork Harbour. This species is common and widespread all around the south coast of Ireland.