Dolphins are man's best friend too.

came across this article in straitstimes...very interesting..

Dolphins shield swimmers from shark in NZ
WELLINGTON - A pod of dolphins saved a group of swimmers from a predatory three-metre great white shark off the northern New Zealand coast, a newspaper reported on Tuesday.
The unusual incident occurred on Oct 30 when lifeguard Rob Howes took his 15-year-old daughter Niccy and two of her friends swimming near the town of Whangarei, The Northern Advocate said.
The dolphins, 'started to herd us up, they pushed all four of us together by doing tight circles around us', Mr Howes told the newspaper. When he tried to break away from the protective group, two of the bigger dolphins herded him back, he said.
He then spotted what he described as a three-metre great white shark cruising towards them, but the man-eater was apparently repelled by the ring of dolphins and swam away.
'It was only about two metres away from me, the water was crystal clear and it was as clear as the nose on my face,' he said.
Mr Howes realised what the dolphins were doing: 'They had corralled us up to protect us.'
Another lifeguard, Mr Matt Fleet, on patrol in a lifeboat, saw the dolphins circling the swimmers and slapping their tails on the water to keep them in place. He told the newspaper he also had a clear sighting of the shark.
'Some of the people later on the beach tried to tell me it was just another dolphin but I knew what I saw,' he said.
Ms Ingrid Visser, who has been studying marine mammals for 14 years, told the newspaper that there have been reports from around the world of dolphins protecting swimmers. She said that in this case the dolphins probably sensed the humans were in danger and took action to protect them. -- AP