[header] How to hold an under the sea party for kids [title] Decorate with a sea theme. [step] Examples include streamers made to look like seaweed, paper fish, , toy boats, starfish, shells, sand, sponges etc. [title] Make some fish and starfish shaped cookies. 
[step] Leave them plain for decorating by the party guests. Set out a decorating area with icing, candies, sprinkles etc.