The history of natural sponges has always been linked to the sea. Greeks and Egyptians used them since ancient times. Although it may seem marine plants or corals, sea sponges belong, in effect, to the family of Porifera, invertebrate marine animals, whose name derives from the Latin porus and ferre and meaning "bearers of pores". It is multi-cellular organisms, with bodies full of pores and channels that allow water to flow through them. All Sponges are aquatic animals and live attached on the rocks of the seabed or on the rocks, managing to colonize environments ranging from tidal zones to depths greater than 8000 m, and are spread across the seabed, from the tropics to the poles. Being predominantly asymmetrical, their body shape is extremely varied, it may be that is encrusting sponges from the reduced thickness but high surface area, tubular-like hollow tubes or pillow or vase. Even their colors and sizes vary widely even garish colors (yellow, blue, purple, orange, red ...) and sizes ranging from a few millimeters to a few meters long. To date there have been approximately 9000 described species. Fishing and processing sponges are very old crafts that date back to previous eras. Even today, the sponges are fished according to ancient traditions. The fishermen, in fact, once localized a colony of sponges, they are immersed, equipped with a diving suit, for the harvest. The sponges are defined today is eco-friendly that sustainable, because care of the fishermen is to cut the towel and not tear it from the bottom, so as not to damage the root that allows a more luxuriant growth. Maintaining the base of the sponge, they will grow back in a few years, often larger and stronger than those fished. Studies demonstrate that the proper fishing of marine sponges allows to increase the density of the same.
In daily use, the natural sponge used for body hygiene. After each use, it should be cleaned under running water, not too hot, making sure to squeeze it to remove residual soap or detergents. The sponge should be left to dry after it is squeezed carefully, so as not to generate any mold and bacteria from forming. It is best to let it dry in a ventilated, trick that guarantees long life.