'Whitsunday Island is the largest in the group of 74 islands discovered on Whitsunday in 1770 by Captain James Cook - hence the name. While you can only camp on the main island, the other islands are renowned for their exclusive holiday resorts and hotels, the majority of which are at the top end of the price scale. A snorkelling or diving trip to the fascinating coral reefs, which can also be viewed from the underwater observatory, is a once-in-a-lifetime experience.