Nutritional Support for Healthy Bones, Natural Energy Production and Overall Well-Being.* Nature's Plus Activated Coral Calcium is harvested in an ecologically sound manner form deep water basins off the Okinawa Islands of Japan. Living Coral Beds are not harmed. Activated Coral Calcium supplies a synergistic profile of Phytavail Complex essential minerals from pesticide-free, hydroponically grown plants. Activated Coral Calcium supplies Bioperine for even greater nutrient bioavailability.