Cruise through jervis bay marine park for a close up dolphin encounter this 2 hour cruise will take you through the sparkling waters and past white sandy beaches of jervis bay on the new south wales south coast youll see countless bottlenose dolphins playing right beside the boat and showing off their swimming prowess youll be amazed by these graceful dolphins as they dive jump and swim through the bay waters at times traveling at speeds of up to 23 miles per hour 37kmh