To create a space that makes you feel as if you just went diving, hang up a tapestry, add coral reefs and deep sea fish, and feature oceanic . If you don’t want all that blue in your home, you might just have a cream-colored wall and then decorate with starfish decor to accent your oceanic, deep blue sea and create a flawless under-the-sea place. Showing off oceanic life is an amazing way to create, design an underwater schemed interior and highlight the beauty of the ocean’s depths.