Northern elephant seals (Mirounga angustirostris) come up on a beach during breeding season. Males arrive first and establish a territory by posturing and fighting with other males. The posturing and fighting behaviors are probably the result of _____ selection.

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Intrasexual selection refers to competition between individuals of the same sex for access to resources or mates. In northern elephant seals, males compete with each other for access to females during breeding season, which is an example of intrasexual selection. The posturing and fighting behaviors observed in males are a result of this competition.

Northern Elephant Seals (Mirounga Angustirostris) Come Up on a Beach