A healthy adult dolphin has been spotted swimming in Melbourne's Yarra River.
The bottlenose dolphin was seen as far up stream as Herring Island near South Yarra, passing landmarks like the MCG and the Royal Botanic Gardens.
David Donnelly, from the Dolphin Research Institute, told Raf Epstein on Mornings that while it was great to see, the dolphin’s appearance was not an indication of the river’s health.