The Tidemakers

The Tidemakers are two great sea monsters that control the tides of each of Eilendor's four seas; the Agean Sea, the Tuun, the Lanasus, and the An Numdir.  One of these get leviathans resides in each sea, controlling the tides and waves.  Luthros resides in the Ageaen and Tuun, Lortho controls the Lanasus and the An Numdir. Luthros is gray-blue, and four-eyed, while Lortho is two-eyed, and green.  The two Tidemakers live in the farthest away corners of the oceans, moving up and down and smacking the water with their tentacles to create waves.  Ocean tides are caused when the Tidemakers inhale water, then exhale.  The Tidemakers were discovered in the late Second Age by the Felldarn airshipman Annan Maonson, in his voyage to prove the world is flat.