One of the simplest sea themed craft activities I do, is a paper bag shark puppet. It is an all time favourite every year with the 3 year olds. I don't usually like to repeat activities but this one is always soo popular that I don't mind.
The children painted a paper bag with black and white paint which mixes together to give shades of grey. (I like to do this because it provides a mini lesson on mixing paint) You could paint or print with anything but we used our kitchen sponges on handles. The children need to paint both sides of the bag.
When it is dry cut out the mouth and use the triangle and use the triangle for it's fin. Staple around the mouth so that when you put your hand in the bag, your fingers don't come through the opening for the mouth. Add rows of sharp teeth, paint the eye and the shark puppet is complete and ready to play with.
Sand playdoughAdd 1 cup of white sand to the usual playdough recipe to give a lovely texture to the playdough. The children used different shells to make prints and mini beach scenes.