Can giraffes swim?

Hello, here is an animation I made in Blender:

It is based on a character I used for making a video game. I would have liked to add some post processing effects like water distortions on it. It uses the simple Blender render not cycles render. I’m planning on doing a whole series. I used the video sequencer to add the background video. Also I rigged it so the eyes point towards a bone.

I am planning to do a mini series with lip-syncing and talking. Any comments on how to improve are welcome!