Hi Torrie!
Coral are filter feeders, what ever is in the water is in them! If there is high levels of mercury in the water the there are high levels in the Coral.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Coral Calcium Dangers
A thorough examination of all coral calcium products reveal that there are mercury and lead in coral calcium products. These are POISONS to the human body.
Even if the quantities of the toxic heavy metals in coral calcium are slight, they are still significant. The long term effects of these elements on the body can pose many problems. There is concern because most coral calcium products on the market do not alert people of the mercury and lead that they contain