The Truth About Oysters — The Bivalve That Will Feed Us While Saving The Planet

Oysters open their top valve to filter water through their gills to feed. This process filters sea water at a rate of 50 gallons (190 litres) per day per oyster. A single acre of oyster reef contains around 750,000 oysters. That’s 37,500,000 gallons (142 million litres) of water cleaned daily by just one acre of oysters.