There are a number of different types of scallops. Calicos from Florida are small, sweet scallops that work well with a pasta. Nantucket scallops, when you can find them, are a medium to small scallop that are absolutely delicious. Sea scallops will be larger. They offer a good flavor and a nice plate presentation. Many scallops are treated with a preservative. Buy dry (untreated) scallops if you can find them.
One easy and delicious way to prepare scallops is th pan sear them. Rinse and dry the scallops while heating a little vegetable oil in a saute pan. Place the scallops in the hot pan and let them sit for a minute with the heat on high. When the scallops loosen from the pan, (they should be golden brown) flip them, turn the heat to medium, and cook until they are done to your liking.
A few easy sauces:
Heat some pesto and whisk in heavy cream
Saute onions, garlic in butter until soft. Season with salt and pepper. Pour in orange jouce, fresh squeezed lime and simmer until it thickens slightly.
Roasted red peppers pureed in blender with a little
chicken stock and season to taste
Satuee mushrooms, garlic, shallots in butter and white wine. Season with fresh thyme and parsely and finish with heavy cream.
Use your imagination and enjoy.