SOURCED FROM THE OCEANnRICH IN ANTIOXIDANTS AND TRACE MINERALSnMarine Phytoplankton is sourced from the ocean, and is a single-celled organism which is considered the base of the food chain. Rich in trace minerals, antioxidants, and many more nutritional substances, it is touted as a superfood. Each serving of our Marine Phytoplankton supplement delivers 250 mg to your body.