This blue shark is the third piece in my collection of Technic sharks. I built it just for looks so the only functions are opening maw and moving fins and tail. Model is also supplemented with simple stand.

This helicopter was inspired by set 8412 - Nighthawk that I got when I was child. It features spinning rotors, six-cylinder fake engine and main rotor can be tilted by lever in cockpit. You can see it in action in this video. Building instructions can be bought exclusively from rebrickable.com where you will be redirected after clicking on "Download instructions".