As the Guru, you must board a shark with and use mind control to convince a total of ten sharks to attack the electromagnetic buoy.
Dr. M has set several traps to stop you from getting both to the groups of sharks and back to the buoy. As you control each shark, jumping to another with then will cause them to follow you. Though it isn't always fool-proof, constantly tapping while in control of a shark will cause you to jump over a majority of obstacles, as well as increase your speed.
When you arrive at the buoy with your group of sharks, jump off with and press to interact with the crank. This will attract all but one of the sharks to the buoy. Jump back onto the shark that is still swimming around and head to the next group until all ten sharks have been collected. Mission complete.