Instead of numbers to assign guests their tables, use names of seashells. Each type of shell represents a different table. Arrange seating cards and shells on aqua fabric to give the impression of water. On each table, display a card with the shell's name, or fill a bowl with those shells as a centerpiece.
Jenny-- Changing my centerpieces to this: the shells inside the vases with a garden rose on top, instead of those thick candles.. The florist will line the aisle with them, and then move them to the tables for centerpieces. We will still be using the baby food jars, though, so keep making 'em! ( I need to send you the lace!)