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Animalia >Chordata >Mammalia >Pinnipedia >Phocidae >Mirounga >

Two males (B at the center and C on the left) are approaching male A (on the right in the view), which is trying to copulate with a female. As male A roars and threatens them, male C flees (3 sec) whereas male B roars and approaches male A. Male A leaves the female and roars back toward male B. Although another male approaches the female, male A does nothing to the new male. Male A and B keep roaring at each other. At this stage of the fight, where the two males only roar to each other, they are thought to be assessing the fighting ability of the opponent. As neither male retreated during the assessment period, the fight escalated into a physical fight in the video picture (52 seconds). You can see the males biting each other in the neck (1 min 3 sec, 1 min 9 sec etc.). The video picture ends when male A bit male C (B?) (1 min 28 sec) and male C (B?) fled shoreward. The picture has been edited and the total length of the original is 3 minutes. In the wild, male A ran after male C (B?) and they continued fighting. (translated by Asoh)

(Data No.momo030627ma01b)

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