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All four acts observed so far seemed to follow a similar pattern where the seal chases, captures and then mounts the penguin. The seal then attempted to copulate with the penguin several times, with each effort lasting around five minutes. Of course, all of this harassment was tiring, so the seal would take a break in between attempts.
Like most birds, penguins dont have external genitalia and instead possess an opening called a cloaca. They mate by pressing these organs together in what is known as a cloacal kiss, in which the sperm is transferred to the female. Traumatically for the penguins, some of the seals were thought to have successfully penetrated the victims cloacas during the act as blood was observed around the area afterwards. Although seals often catch and consume penguins, in all but one of the acts the seal let the penguin go afterward. After the most recently documented incident, however, the seal killed and ate the penguin.