A shark's worst nightmare, made only by the Helicopter and Life Raft set.
About this creation
Yah, I made this a couple weeks ago.
In any case, I only used pieces from the set "Coast Guard Helicopter and Life Raft" (7738). The story behind it is simple: I built the life raft and helicopter, flew it around my house's ground floor (all the while holding the raft) for a few seconds, set it down on the kitchen table, and took it apart. Partially. Just to salvage parts for my mech, and afterwards I made a shark-stand for the carnivorous fish.
Here's the mech up against his foe: a shark. I made a stand to make it more underwatery.
Backside. Nothin' special…
The mech's left arm ends in two underwater missiles, deadly for any fish. And not approved by the FDA, so sharks, don't eat 'em.
Heh, I'm kinda proud that I fit the power function into the mechanism, I literally had to untie the string so it could go through another piece in order to keep it up against the legos. Downside: This makes it REALLY fragile. That power function ain't functioning without the arm tearing off. Oops!……
It doesn't matter if it's small: Upside you can add motors to move it a bit (Like you did). For some reason it reminds me of the Loader Mech off of Aliens. You should try to build something like that. Nice Job!