The sardines fall back on their instinctive defence, swarming into a huge mass that confuses a predator.

Thanks, but the dolphins have a strategy that turns this to their advantage.

Working together, they separate off a pocket of sardines in smaller numbers.

The fishes shoaling defence now works against them.

Dolphins corral the bait ball and heard it to the surface way.

This'd what other hunters have been waiting for.

Now the sardines are within range of the gannets.

The bait balls form on reform seldom lasting longer than a few minutes each sharks piling, taking advantage of the dolphins.

Hard work.

The predators ignore each other.

There's only one victim here.

The millions of tasted little fish they've been stalking for so long.