Nordic Seas intermediate water leaves through the Denmark Straight and the Iceland Ridge. The densest overflow waters leave through the Faroe Bank Channel. The water masses that encompass the Nordic Seas are always changing in response to the local variations that occur between atmosphere-ocean fluxes and convection of intermediate to deep water. The Nordic Seas are found between the North Atlantic and the Arctic Ocean, both having variable surface water conditions. The Nordic Seas are complex in the variety of water masses it contains: two surface waters, three intermediate waters, and three deep waters. Figure 3 shows the water mass circulations that
Freedom of the seas Dutch jurist and philosopher Hugo Grotius wrote what is considered the foundation of international legal doctrine regarding the seas and oceans – "Mare Liberum", a Latin title that translates to "freedom of the seas". The Grotian concept of "freedom of the sea" was only accepted after a century long debate between Grotius' ideas and John Seldens. While it is generally assumed that Grotius first propounded the principle of freedom of the seas, countries in the Indian Ocean and other Asian seas accepted the right of unobstructed navigation long before Grotius wrote his "De Jure Praedae" ("On the Law of Spoils")