Materials:
Clear plastic bottle with cap
Water
Blue food coloring
Baby oil
Small sea items (shells, plastic fish, etc.) — optional
Glue gun
Water
Blue food coloring
Baby oil
Small sea items (shells, plastic fish, etc.) — optional
Glue gun
Directions:
Fill 1/3 of the bottle with water and the rest of the bottle with oil. Add 1–2 drops of blue food coloring and the small sea items. Because oil and water do not mix, the oil will create slow waves in the water as you turn it back and forth. Secure the cap for the bottle with glue from a glue gun.