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Golden jellies dive deep to feed -- but if they stay down too long, they suffocate in water without oxygen.

The oldest female elephants lead their tribes in an ancient circular migration following the water's path.

The scorching sun proves to be too much for one elephant calf, whose family can only watch its sad demise.

After tracking elephants undetected, cameraman Bob Poole gets stuck in the middle of two elephant herds.

While searching for elephants, cameraman Bob Poole and his crew are encased in a massive dust storm.

Cameraman Bob Poole describes his method for filming elephants undetected.

Great whites go where the meal goes - and today that meal is elephant seal.

Musical montage of underwater cameraman filming whale shark.

Producer David Hamlin goes underwater in a submersive with a camera to shoot great whites.

Crew member falls into the water near a great white when it tips the boat.

One cameraman hides inside a blind on a cliff ledge to grab some phenomenal footage of peregrine falcons.

A cameraman makes a special hide to get up close to birds.

This camera crew grabs some amazing walrus shots -- before getting stuck in the ice.

Martin Dohrn explains the Frankencam -- the handmade apparatus used to film army ants in extraordinary ways.

Martin Dohrn and company on the pains of filming ants.