A pod of seven killer whales became stranded on a sand bar near Australia's Fraser Island on Tuesday. Immediately a rescue operation tried to keep the whales hydrated and help them back into deeper water. Five of the whales managed to swim free at high tide, but the other two, a mother and her calf, died earlier in the day. A marine veterinarian will take blood samples from the deceased whales to see if they beached themselves due to poor health. The pod was in Queensland waters as part of the annual whale migration, where they often hunt the young of migrating humpback whales. Report by Sarah Johnston. Subscribe to ITN News! http://bit.ly/itnytsub Like us on Facebook: http://www.facebook.com/itn Follow us on Twitter: http://twitter.com/itn Visit our homepage: http://itn.co.uk More stories from ITN: Rocket explodes after lift-off in Kazakhstan: http://bit.ly/19TyFnc Egypt protests: Muslim Brotherhood HQ set ablaze: http://bit.ly/13rR8ap Gay marriage: Couples line up to wed in San Francisco, California: http://bit.ly/12BJDLX EDL leaders arrested during march to Woolwich: http://bit.ly/14M6gMa Obama speaks about Mandela on board Air Force One: http://bit.ly/19K8L55 Rival drag queens fight at a pageant: http://bit.ly/12b6DwZ GRAPHIC: Peru bullfighter badly gored during ring battle: http://bit.ly/13iSiGj Chinese woman finds half meter-long lizard in her home: http://bit.ly/17DbPPM Australian Prime Minister Julia Gillard's resignation speech: http://bit.ly/121Zn6H Dynamo 'levitates' on side of London double decker bus: http://bit.ly/19wCB0q Daredevil Nik Wallenda crosses Grand Canyon on high wire: http://bit.ly/11PaHEm Roller coaster accident: Tourists rescued from ride in China: http://bit.ly/16wm33s Topless Femen activists attack Tunisian PM: http://bit.ly/10mKJdE World's Ugliest Dog Contest 2013: http://bit.ly/17jbMIT Amazing moment deaf three-year-old boy hears for the first time: http://bit.ly/13Xw35c Check out Truthloader, the new home of citizen journalism on YouTube. Subscribe now at http://bit.ly/tldrsub See 2013's Most Watched Videos: http://bit.ly/14iM9r5 See our Top 20 Most Watched Videos: http://bit.ly/11GI36D See 2012's Most Watched Videos: http://bit.ly/18R1boW