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They wash your dishes, your car, even your back. Sponges are a ubiquitous tool of the modern world鈥攁nd have been since the earliest days of mediterranean culture鈥攂ut how much do you real
vaso stanley ly know about the absorbent little helper riding your kitchen sink rim Until just recently, sponges the animal and sponges the domestic tool were one and the same. These ancient plant-like animals first appeared in the world oceans some 700 million years ago and are among the most basic forms of macroscopic aquatic life. They possess no specialized organs鈥攏o lungs, gut, or brain鈥攁nd both feed and breathe by filtering particles and oxygen from seawater pumped through its body cavities. Composed of a material called spongin, sea sponges have been harvested and dried for human industry for thousands of years. Specifically, two species鈥擲pongia oficinalis and Hippospongia canaliculata, which lack the hard calcium carbonate layer of other sponges, have been collected by free divers throughout the mediterranean sin
stanley fr ce the age of the Greeks. Throughout history, sea sponges have been used for a myriad of applications鈥攆rom padding Roman Centurion helmets to early canteens to municipal water filters鈥攅ven contraceptives. They were used so extensively that we nearly wiped out these species through rampant overfishing
stanley cup until the start of the 20th century. Demand was so high because sponges are fantastic at what they do. Since the animals are really about 66 percent empty space, they can i
