My family will be in Perth in 2nd week of Dec 2011. We are thinking of travelling to Mandurah for a day trip to sight the wild dolphins. Is Dec a good month for sighting the wild dolphins ? Check Visit Mandurah webpage - dolphin tours by 2 operators : Mandurah Dolphin Tours and Bouvard Cruises. Is such tours worth it ? Which operator is better ? Better to do the tour in the morning or afternoon ( as in can sight more dolphins ) ?