PACIFIC PLANKTON BLEND We all like a little variety in our diets and marine animals are no different. Pacific plankton provides that variety. Pacific plankton is a small species of saltwater krill, similar in size to a large mysis shrimp. Because it’s a saltwater species, the plankton provide high levels of omega-3 fatty acids and astaxanthin. Keep a package of plankton in your freezer for a change of pace. Ingredients: Pacific plankton (Euphausia sp.), reverse-osmosis water.