HELP! Trying to find vid of seagulls hunting fish then surprise whale feeds!?

It was on Reddit and popular on Youtube, the video I THINK was National Geographic and at first was about how seagulls lured a whole school of fish into a glob near the surface and picked at them, then, out of nowhere, a HUGE whale comes up from the bottom and swallows the whole school. PLEASE HELP ME FIND THIS VIDEO!!!