Bandeau that dates from the Diocletian period (286–305 AD), mosaics depict young women dressed in bandeau-like garments participating in weightlifting, discus throwing, and running ball games, but not swimming. The mosaic features ten maidens who have been anachronistically dubbed the "Bikini Girls". Other Roman archaeological finds depict the goddess Venus in a similar garment. In Pompeii, depictions of Venus wearing a bikini were discovered in the Casa della Venere, in the "tablinum" of the House of Julia Felix, and in an atrium garden of Via Dell'Abbondanza. In the 1920s the term was applied to a simply shaped brassiere, usually of a
Continental shelf an advancing oceanic plate dives beneath continental crust in an offshore subduction zone such as off the coast of Chile or the west coast of Sumatra. The largest shelf – the Siberian Shelf in the Arctic Ocean – stretches to in width. The South China Sea lies over another extensive area of continental shelf, the Sunda Shelf, which joins Borneo, Sumatra, and Java to the Asian mainland. Other familiar bodies of water that overlie continental shelves are the North Sea and the Persian Gulf. The average width of continental shelves is about . The depth of the shelf also varies,