Each year, southern hemisphere humpback whales migrate from Antarctica to French Polynesia where they come to calve, rest and reproduce. They are regularly sighted within 2km from shore including the bays occasionally.
The excursion objective is to bring you within close proximity of the whales so you may observe them conveniently from the boat. Getting closer requires basic snorkeling skills to enter the water and interact with the whales in their element. With a bit of luck, a calf will take special interest (they usually do) and/or you will feel whale song!