Typical multilevel societies, usually consisting of several hundred individuals, are composed of several core one-male-multifemale units, as well as some all-male bachelor groups, Qi said.

齐说，典型的重层社会，通常由数百人组成，由几个核心的一夫多妻的家庭单位组成，以及一些全雄性的单身汉群体。

These 4 to 14 males are also known as second order alliances and they are the core social unit of the male bottlenose dolphins in Shark Bay.

这4到14只雄性宽吻海豚也被称为二级联盟，它们是鲨鱼湾雄性宽吻海豚的核心社交单位。