Wool sea sponges can be used for bathing, washing and cleaning jobs that require a delicate touch, faux finish painting projects, texturing and pottery-making. They are extremely soft and are the best choice for cleaning the most delicate surfaces.Native to the waters surrounding Florida, natural sponges have been used for hundreds of purposes for over 2,000 years. The Wool Sea Sponge is a 100% biodegradable, environmentally safe, quickly renewable natural resource. The wool sponges been cut in two to increase the working surface area (these are not whole sponges intended for decoration) and, as with any natural product, will vary in size, shape and color.