I know right? In Morrowind you had to go for lengthy swims underwater to get both Gold Brand and the Dragonbone Mail. And then there were all the crashed ships in the sea of Ghosts. I know there are some crashes in Skyrim too though link the Pilgram's Trench. But on 1 ship wreck in Morrowind, you got a legendary quest for a legendary artifact, the http://www.uesp.net/wiki/Morrowind:Extra-Comfy_Pillow#Extra-Comfy_Pillow! Its 2:40 am here and I really wish I had an Extra-Comfy Pillow so I could sleep.

So will Dawnguard, apparently.
How would you know, exactly? I don't think there's currently much lore about them right now. But they would definitely make great enemies, though they would probably have to give them some kind of tops to wear in order to avoid generating unwanted controversy.And what, giant flying lizards in a frozen land shouting fire and ice on people and running around shooting lightning from the palms of your hands is realistic? The real world must be a lot more interesting (and dangerous) than I thought.

They do make the game world "realistic" through many other means, though, like the art direction and how the player interacts with the world, etc. But a big part of fantasy is that it at least partially goes against what is realistic, as opposed to fully embracing realism, if that makes sense.