The whale shark season in Exmouth starts in mid-March and runs until the end of September. Tours usually start operating from March and continue through to the end of June in Coral Bay, and to the end of August in Exmouth. Only some companies continue to operate until the end of September, so that's something to take into consideration. Whale sharks are wild animals in their natural habitat, so there is no guarantee that they will be present at any given time. However, during the Exmouth whale shark tours season, the guides know exactly where to go to spot them, and they manage to do so almost all the time!