Hydro achieved his Mega Form and blasted an Aura Sphere from his back cannon.  Kohaku was not in a position to counter the attack and was blasted for a lot of damage for a normally-effective hit.  He got back on course, grabbed Hydro and gave the Mega Blastoise a ride.  Time was on the verge of expiring as Kohaku violently threw Hydro back down to the stage.