Definition
Family Cardiidae encompasses various species of heart-shaped bivalve mollusks known as cockles. These shellfish live primarily in sandy or muddy intertidal zones. They are characterized by their distinctive ribbed shells and active burrowing behavior. Think of Family Cardiidae as the community of heart-shaped shells living their best lives on the beach. Some species are edible and important to coastal ecosystems. They contribute to the biodiversity of marine habitats and play a role in nutrient cycling.