Board Thread:Lore Discussion/@comment-8248675-20130629212310/@comment-7407991-20130815012522

Shor purposely vanishes from sight, because the divinity of a... Well, Divine, would blind any mortal who saw their actual form. (Akatosh in Oblivion wasn't his "true" form, it was a diluded version created with the Amulet of Kings and Martin)

On a different note, the reason the bridge across the chasm from Sovngarde into the Hall of Valor is the corpse of a whale is because that's Tsun's body. Tsun's physical form in the Dawn Era was a whale, which is also why a lot of Nordic and Ancient Nordic engravings and decorations are depicted as whales.