Portuguese seafood canner, Freitasmar, has received Friend of the Sea (FOS) certification for Skipjack and Yellowfin Tuna on January 1, 2017.  Freitasmar, which specializes in the production of canned seafood, can now display the official seal on its products. FOS-certified supplier, Frabelle, a fishing company from the Philippines, fishes all tuna species for Freitasmar. Frabelle uses the Purse Seine fishing…