Unlike the open ocean

The water here is rich in plankton

Feeding huge shoals of fish and even giant manta rays

Each sea lion needs over six kilograms of fish a day

With shoals this size it shouldn't be too difficult

But it's not easy picking one fish out of the crowd

The fish know there's safety in numbers

So for the sea lions the trick is

To snip the shoal into smaller and smaller balls

Finally a fish breaks for cover

It's what the sea lions have been waiting for

Crevices in the reef might seem to offer shelter

But that's no problem for the sea lions

Who simply scare them out with bubbles

With the sea lions distracted

The fish regroup and the chase starts all over again