A blurb from Wiki:
Seafood boil is the generic term for any number of types of social events in which shellfish is the central element. Regional variations dictate the kinds of seafood, the accompaniments and side dishes, and the preparation techniques (boiling, steaming, baking, or raw). In some cases, a boil may be sponsored by a community organization as a fund-raiser or a mixer. In this way, they are like a fish fry, barbecue, or church potluck supper. But boils are also held by individuals for their friends and family for weekend get-togethers and on the summer holidays of Memorial Day and the Fourth of July. There are also companies that can cater a boil for large and small events. While boils and bakes are traditionally associated with coastal regions of the United States, there are notable exceptions. For example, the Fiesta Oyster Bake (San Antonio) began in 1916 as an alumni fund raiser for St. Mary's University. It is now attended by over 70,000 people during its two day run and is a major music and cultural event in the city.
3. Add the clams and cook for 10 minutes or until they open.
4. Add the shrimp, stir briefly, then turn off the heat.
5. Using a strainer, remove all the shellfish and veggies onto a large tray or platter (or you can go traditional and spread everything out on a newspaper-lined table). My take is to give each person a bowl of the broth on the side for dipping.