Finding Nemo is a classic movie, no matter what your age, with a number of catchphrases including "just keep swimming" from the ever brilliant Dory. Four-year-old Aiden Hyde was in charge of finding Nemo when the fish went "missing" from Sydney Harbour earlier this month. Aiden is currently in remission from cancer, after battling stage 4 neuroblastoma and the treasure hunt was organised by the Australian branch of the Make-A-Wish charity. "While in hospital he loved ­Finding Nemo, Aiden's mother, Nicole Hyde, told The Daily Telegraph. "He had a central line so he had to stay very still and there was not much else to do but watch movies." The special adventure started when Aiden and his family visited the Sydney Aquarium to see the clown anemonefish only to discover "Nemo" was missing. Earlier this week, they traveled to Cairns for a treasure hunt that saw Aiden riding around the Queensland city in a police motorcade as he solved the six clues to help him find Nemo.

Help Aiden with his 2nd clue! Look for an Aussie animal with big teeth and who looks a bit 'snappy' #nemowish pic.twitter.com/1YUUyD2iSQ — Make-A-WishAustralia (@MakeAWishAust) April 29, 2014

  The little boy also had the excitement of a helicopter ride and for the final clue, Eric Bana who provided the voice of Anchor the shark in Finding Nemo, dropped in to help.   For the last part of the journey, Aiden visited Green Island and having taken snorkeling lessons before, he went underwater with trained divers to locate Nemo.

Aiden's done it! His wish to find #Nemo has come true!! What a way to celebrate #WorldWishDay! #nemowish pic.twitter.com/7KysZGF0RP — Make-A-WishAustralia (@MakeAWishAust) April 29, 2014