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 frequent earthquakes that move sediment to the deep sea. The shelf usually ends at a point of increasing slope (called the "shelf break"). The sea floor below the break is the "continental slope". Below the slope is the "continental rise", which finally merges into the deep ocean floor, the abyssal plain. The continental shelf and the slope are part of the continental margin. The shelf area is commonly subdivided into the "inner continental shelf", "mid continental shelf", and "outer continental shelf", each with their specific geomorphology and marine biology. The character of the shelf changes dramatically at the shelf break,