Lay a strip of prosciutto on a work surface. Arrange basil leaves over. Place a piece of fish or oyster on the basil and roll the prosciutto up snugly. Place each bundle, seam side down in a skillet over medium high heat with olive oil. Don't mess with the bundle until it is well browned and the open end (seam) has sealed. Flip once to brown the other side. The more you mess with them, the more they will fall apart. Serve with your favorite dipping sauce. I like something spicy!