telling me the story of the northern elephant seal (Mirounga angustirostris) as

telling me the story of the northern elephant seal (Mirounga angustirostris) as it relates to the following terms and concepts:
genetics and genetic bottleneck
mating system and the costs and benefits of sex
sexual selection and sexual dimorphism
overexploitation and extinction
As you use each of these terms in your essay, please boldface that term so that the connection you are making is clear.