'Killer whale' attacks a group of sharks
Now forget Frozen Planet, how about this for some amazing wildlife footage!
This amateur video is believed to show a killer whale attacking a group of sharks in New Zealand.
Killer whales spend up to 60% of their lives looking and hunting for food, but are very rarely seen attacking sharks.
Eyewitness David Evans said he was told there were whales in the area - so he headed down to the beach with a camera.