Mandurah’s dolphins are renowned for their frisky behaviour, but Murdoch University researcher Krista Nicholson has revealed things get complicated when it comes time for the popular cetaceans to choose their sexual partners.

Ms Nicholson said her Mandurah Dolphin Research Project had observed big groups of dolphins engaging in what looked like “homosexual behaviour”.

She said peak mating season was over, but groups of male dolphins had been observed socialising and she described a pod of 15 who were studied by the research team.

“These dolphins, all but three of them juveniles, organised themselves in four sub-groups in which they were observed engaging in socio-sexual behaviour that included mounting and genital contact between individuals,” Ms Nicholson said. Read more via Mandurah Mail