Bay of Belfalas

Belegaer
J. R. R. Tolkien's legendarium location
Other name(s)	The Sundering Seas, The Great Sea, The Western Sea, The Great Water
Type	Great Sea of Arda
Location	West of Middle-earth

In the fiction of J. R. R. Tolkien, Belegaer, the Great Sea or the Sundering Seas, is the sea of Arda that is west of Middle-earth. It is thus equivalent to the Atlantic Ocean.

Before the Second Age, Belegaer stretched from the Gap of Ilmen in the far north, where a bridge made of ice known as the Helcaraxë connected Middle-earth and Aman, to the far south, where it also connected with Ilmen and froze. Belegaer was narrower in the north than in the south, with its widest part near the equator of Arda.

The full extent of Belegaer after the Akallabêth is never made clear, but it reaches far enough to the north to be ice-covered, and far to the south.

The name is Sindarin, and has the elements beleg ("might") and aer or eär ("sea"), the latter also present in the name Eärendil ("sea-lover"). The Quenya name of Belegaer, never used in published writing, is Alatairë.

Before the end of the Second Age, the continent of Aman, home of the Valar, formed the western edge of Belegaer. Before the ruin of Beleriand at the end of the First Age, the sea was narrow and ice-filled in the north, forming the strait of Helcaraxë, the Grinding Ice. It was thus possible to cross from Aman to Middle-earth on foot, though with difficulty, as did Fingolfin and his people of the Noldor when fleeing Valinor.

After the War of Wrath Belegaer was widened by the drowning of a large part of Middle-earth. During the Akallabêth in the Second Age, the seas were "bent" and the world was made round. Aman was removed from the world, Belegaer washed "new lands", and only the chosen could find the "Straight Road" to Valinor. The new western reaches of Belegaer are never described in the narrative, although there are indications that Númenórean refugees reached them in search for Valinor. The "new lands" have been compared before to the Americas by fans, although Tolkien himself never indicated whether that was what he intended.

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Wikipedia