in Shark Bay, Australia male dolphins have began to form alliances with other male dolphins. Why would male dolphins need to form alliances in the first place? Well these alliances form between 2 or 3 males, together they isolate females during mating season from other males, so they get "dibs" on females first, or these alliances will steal females from other alliances, so they can also be some of the first to find a mate.
I thought this article was both interesting and informative. it shows how similar humans are to animals, by forming alliance, but humans don't form alliances to seal off females.
This affect the world by helping the dolphin population, i'm not sure exactly how it helps but it must have some positive effect. this doesn't particularly help the human race, but it does help us understand dolphins a bit better.
http://www.sciencedaily.com/releases/2012/03/120329101510.htm
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