After doing 'Firefly' and moving on, I always wanted to be part of a series again. I love doing films, too, but there's just something special about being part of the team and feeling like you're actually a part of the family, and I always look to re-create that.
As to the effect of the wave on the air, we will suppose the water to be quite flat and the air motionless, a heavy undulation comes on the scene, it has to pass, so it pushes the air up with its face, letting it fall again as its back glides onwards.

