Look out for the signs denoting the French name trou du souffleur. However, you won't miss it because the blowhole is right on—and under—the coastal road and there are always tourist buses around. Water rushes into a cavern and if the swell is just right it shoots out through the hole in the rocks, like a geyser. There's a viewing platform and if the sea's rough, you could get wet. Be careful driving on this section of the road, as there's a narrow, blind corner as you approach the blowhole at PK22.
PK 22, Coastal road, Tiarei, Tahiti, French Polynesia