Borders of the oceans seas it contains) as follows: Note that these definitions exclude any marginal waterbodies that are separately defined by the IHO (such as the Kara Sea and East Siberian Sea), though these are usually considered to be part of the Arctic Ocean. The CIA defines the limits of the Arctic Ocean differently, as depicted in the map comparing its definition to the IHO's definition. The Atlantic Ocean separates the Americas from Europe and Africa. It may be further subdivided by the equator into northern and southern portions. The 3rd edition, currently in force, of the International Hydrographic Organization's (IHO) "Limits of
Global Ocean Commission the co-Chairs stated that the Commission is "inspired by the opportunity that exists for the high seas to play a regenerative role in restoring whole ocean health, and by the potential of a small number of bold proposals to stimulate a cycle of recovery." The high seas constitute 45% of the Earth’s surface and are essential to the health of the planet. Five key "drivers of ocean decline" were identified by the Commission: rising demand for resources; technological advances; decline of fish stocks; climate change (including ocean acidification), biodiversity and habitat loss; weak high seas governance. The mandate of the