In September, October, and November, Puerto Piramides becomes the fundamental base for whale watching. Whales, depending on whether they are mothers with offspring, males or females without breeding, have different behaviors. The females that calved, they are observed with the calf, much more skinny than when they arrived and the bigger and daring pups, they begin to move away from their mothers, join with another calf, play, and jump. The female whales that did not breed, are coveted by the males that harass them among several, creating one of the most extraordinary love courtships in nature. These behaviors are closely observed in whale watching embarking from Puerto Piramides, the only port of whale watching in Peninsula Valdes.
The mating of the Southern Right Whale, or courtship, happens with several males and a courted female, which is enclosed by the sides by 2, 3 or more males. The mating of the whales may take more than a day and the female, to avoid being copulated, is placed on her belly, a position that she can hold for a few minutes because she needs to breathe.