Create a bulletin board to display your preschoolers' work. Cover the bulletin board with blue paper to create the look of water. Another option is to cover it with fish netting. Place plastic aquarium plants around the border or create a seashell border by having the children paint uncooked pasta. Create or purchase letters to make a title such as "Sea Our Great Work" or "Sea What a Great Job We Did."
Use your bulletin board to teach your preschoolers about various animals that live in the sea. Cover the bulletin board with blue paper to create water. Cut circles of various sizes out of light blue paper and use them to create a border of bubbles around the bulletin board. Provide the children with outlines of creatures to color or paint. Use crabs, starfish, whales, fish, octopuses and seahorses. Attach the animals to the bulletin board.
Create a bulletin board to help your preschoolers visualize a sea habitat. Have the children use watercolors to create the look of water on white butcher paper. Spread glue along the bottom of the butcher paper and let the children sprinkle it with sand. Use this for the bulletin board's background. Provide the preschoolers with circles of green construction paper and give them stickers of underwater plants, coral, rocks and shells to apply to the circles. Attach the circles to the bulletin board.
Create a bulletin board that incorporates the names of all the children in the class. Make simple fish shapes out of paper plates. Cut a triangle out of one side of each paper plate and staple it to the other side of the plate for the fish tail. Give the "fish plates" to the children and have them decorate their fish using paint or markers. Print each child's name on his fish and attach the fish to the bulletin board. Give your bulletin board a title such as "Our School of Fish."