E . south sea), a deep inlet of the North Sea, in the Netherlands, which includes the islands of Texel, Vlieland, Terschelling, and Ameland, and was formed by irruptions of the North Sea into a lake called Flevo, in the 12th, 13th, and 14th centuries, when thousands of people were drowned; is 85 m. long and 45 m. broad, and is embraced in a circuit of 210 m.; it was for some time in contemplation to reclaim this area, and after much weighing of the matter the Dutch Government in 1897 adopted a scheme to give effect to this project; according to the scheme adopted it is reckoned it will take 31 years to complete the reclamation at the rate of several thousand acres every year.