From PBS Terra.

Oysters may not have brains, but they are brilliant ecosystem engineers. An acre of healthy oyster reef can filter more than 30 million gallons of water in a day! They increase biodiversity, can decrease shoreline erosion and ocean acidification, and generally perform a whole host of essential ecosystem services. Abby Barrows, oyster farmer at @deerisleoysterco, shares how oysters are helping our oceans and what makes them essential for the ecosystem.