Natural Sea Sponges have been used for thousands of years. There is nothing like a natural sponge for cleaning your body, around the house and your car. They're also great for painting with and ceramics. Unlike synthetic sponges which do not last nearly as long as a natural sea sponge they can be washed and sanitized so there is no bacteria growing within them. With just a little care they can last for years, say that about a synthetic sponge!