Sorotubu Kojira (Sore-Oh-Two-Boo Co-Jeer-Ah)
Basic Information
Anatomy
The Sorotubu Kojira is in all physical regards an average whale. They have two large fins that guide their movement while their tale provides the power to glide through the water. Their eyes rest on the side of their head and their mouth is designed to scoop up small fish for nutrients. They also have a dorsal fin that helps keep them level side to side while swimming. In terms of size they are, at adult hood, 180-300ft long and can weight several hundred tons.
As mentioned earlier they also contain a magical aura within them that they can access. They do this in order to glide above the water. Most scholars will say that they use the aura in order to cast a version of the levitate spell on themselves. It doesn't not last forever and seems to be protective enough that it won't allow them to levitate themselves onto the shore. So far no other magical feature has been seen by the flying whales.
I love how you blend the magical with the mundane here, that they can fly but not too high, and that there are evolutionary reasons for the adaptation (getting fish who hide from them closer to the surface). Well written and well thought-out!