MELBOURNE, Victoria -- They're one of the most intelligent marine mammals, well known for their inquisitive and playful nature and now, following an amazing discovery by a Monash University researcher, Victoria's dolphins have been formally recognised as a new species.Kate Charlton-Robb, a PhD researcher in the School of Biological Sciences unearthed the remarkable findings, which have been published in the latest PLoS ONE Journal, showing that coastal dolphins in southern Australia greatly differed from any other dolphin worldwide.Ms Charlton-Robb has formally named the new dolphin Tursiops australis with the common name, the Burrunan dolphin, being an Australian aboriginal name given to dolphins in the Boonwurrung, Woiwurrung and Taungurung languages, meaning 'large sea fish of the porpoise kind'.