Tiger shark off Raine Island, Great Barrier Reef (World Heritage Area), Queensland, Australia.

Three Queenslanders are being hailed as lifesavers after plucking their mate from the water and desperately applying a tourniquet to his seriously wounded leg after he was bitten by a shark.
The officer in charge of the Cardwell ambulance station, Martin Taylor, has praised the quick actions of the trio after their friend was attacked while spearfishing about 10.20am on Saturday.
Mr Taylor said the 26-year-old was bitten when he jumped into the water at the popular fishing spot of Eva Rock near Hinchinbrook Island, off the coast of Cardwell in far north Queensland.
“From what I’ve been told he was in the water, he’s been hit, they’ve heard a noise and they’ve dragged him in as soon as they’ve realised what’s gone on,” Mr Taylor said.
He said the three friends pulled him into their boat and one of them, an ex- military serviceman with first aid training, tied a …