Quahogs are a type of hard-shelled clam found along the Atlantic coast of North America. They are known for their thick, rounded shells and can grow quite large, sometimes reaching up to four inches in diameter. Quahogs are often harvested for food and are popular in various dishes, including chowders and clam bakes. These clams are classified into different sizes, with the largest being called chowder clams. Quahogs are also significant in Native American culture, where they have been used for food and as a form of currency. Their meat is chewy and flavorful, making them a favorite among seafood lovers.