Pacific Ocean Coral Calcium Reef Milk has been consumed for centuries by the residents of Okinawa in Japan, who are renowned for living long and relatively active lifes. It is harvested from ancient reef sediments which are prized for their natural balance of calcium, magnesium and trace minerals. Coral is chemically similar to the human skeleton. Pacific Ocean Coral Calcium is a calcium supplement that is easily absorbed by the body. This is also an ideal alternative to dairy sourced calcium for those who have dairy allergies.