Into the land beneath the wave, Mananan, the proud god of the sea brought Dermot and Finn and the Fianna to help him in his wars, as is told in the story of the _Gilla Dacar_.

On these western seas, near the land, Lir's daughters, singing and floating, passed three hundred years.

On other seas, in the storm and in the freezing sleet that trouble the dark waves of Moyle, between Antrim and the Scottish isles, they spent another three centuries.

Half the story of the Sons of Usnach has to do with the crossing of seas and with the coast.

Even Cuchulain, who is a land hero, in one of the versions of his death, dies fighting the sea-waves.