Seaside Lesson Plans
 

This is a free set of seaside lesson plans ... only pages 1 - 14 are free the remaining have to be purchased but there are some great ideas in there.
http://www.funlessonplans.com/aSea/seashore.htm

From Silkysteps there is a page of free resource links to look through, the summer preschool store and from Amazon lower case letter moulds for sand, sea creatures for role play