Im looking to build a remote controlled shark, any ideas?

Question

I recently thought this up, and was wondering how it could be done. I have no knowledge of remote controls, motors, etc. I thought i could scavenge parts from other devices. I had an idea it would be kind of similar to an underwater remote controlled plane, because it would be able to dive and surface, as well as go left and right. Im looking to fit all of the components in a modified housing to look like a shark, and am putting the components in it. The back fin would turn left and
right, and the side fins would act like those things on a plane, and allow it to dive and surface. Any input, advice, etc would be greatly appreciated.

also, i want it lifelike, not toyish, hence building a custom frame

Answer 1

You don't have to reinvent it yourself. Go to this link and simply buy one.