Uin

Uin was the great whale served to Ulmo, being entitled as the "primeval whale". Although almost nothing was mentioned about his/her physical description, the whale was said to be a Right Whale (Eubalaena sp.). In his/her appearances in the earlier versions of the Legendarium and in the Roverandom, it could be seen easily that Uin was one of the most momentous of all creatures of Ulmo, as the whale was the one to pull Ulmo's cart, and was also left to carry the island of Tol Eressëa to off the coast of Valinor, the Aman's capital. Uin was also in charge to carry important figures. It was unknown whether Uin was actually one of Maiar to have shapes (a fine example of these races are the Great Eagles).

Trivia

 * In the Middle-earth Role Playing, especially cetaceans are directly realms of Ulmo. Dolphins are called "Ulmodil" (friends of Ulmo).