Unlike humans and many bird species, dolphins do not become a pair in order to bring up their offspring.

 

In Shark Bay, Australia, males live in bachelor groups, while females tend to live in matriarchal groups, based around an older mother.

 

The males in their bachelor groups form strong bonds of friendship between each other, and work together to find a mate, 'herding' a single female away from the group.

 

It doesn't seem very romantic to us, but it works for them.