Like oysters and clams, scallops are a type of shellfish that live in saltwater. While there are many varieties of scallops, the kind you usually find in stores are either small (bay) scallops, which are good for throwing in a pasta or chowder, and larger (sea) scallops like the ones we’re cooking here. These sweet and tender little shellfish have a pleasant texture that’s delicate but still firm, like a cross between lobster and fish.