DG How to decorate a wall with fishing net and seashells? Hanging a fishing net from your wall is an attractive way to give the room a nautical or tropical look; handing seashells from the netting adds to the nautical appeal. This look is particularly effective if you hang or paint a mural of an ocean or lake scene on the wall before adding the fishing net and seashells. Other options include painting the walls an ocean blue shade before adding the decor or hanging an inexpensive poster depicting a seascape.