There are many islands scattered in Aegean Sea, with winding coastline and numerous bays, ports and sheltered harbors. Located in the collision zone between the Eurasian plate and the African plate, it is an unstable region of the crust, with many volcanoes and earthquakes. The length is 6 1 1km, the width is 299km, the area is 2 1.4km㎡, the average depth is 570m, and the deepest point reaches 3543m in the east of Crete. ..