This excursion is carried out aboard the semi submersible Yellow Submarine. Unlike the other boats, this semi submersible allows to observe the whales submerged in their world. Underwater, the perspective is completely different, the experience is the same as if you were diving with them. While they remain close to the ship, they are observed all the time through the 40 windows of the submarine cabin. On board, passengers can move freely and also opt for the deck of the ship to observe from the surface of the water as in a traditional sighting.