English: Spiral eddies in the Mediterranean Sea in 1984. This photograph was taken in the Mediterranean off the coast of the Egyptian/Libyan border. It depicts a shear current, but the spirals are unusual in that, rather than exhibiting apparently random patterns, they are aligned in a straight line or “street.” It is thought this alignment in a street formation reflects that the spirals have only just been created along the shear wall and have not had sufficient time to interact with surrounding dynamic features to form a more random pattern.