11/7/2022 0 Comments Common bottlenose dolphinOver 100 bottlenose dolphins call Port Phillip home while we know we have approximately 30 common dolphins (some are more photo-shy than others photos are used for ID). Of great interest to us is the difference in community size. The dorsal fin of a bottlenose is falcate (hooked) with an even grey colouration while the common dolphin’s dorsal fin is more triangular with a paler centre. Our adult bottlenose dolphins are slightly larger than a fully-grown common dolphin and easily weigh a couple of hundred kilograms. They are easily distinguished from bottlenose dolphins, which are grey with a lighter ventral (belly) side. Prior to this, common dolphins had been sighted but they appeared to be casual visitors in the bay.Ĭommon dolphins have a gold stripe along their flank and grow to approximately two metres in length. The Dolphin Research Institute has been keeping records on the Port Phillip bottlenose dolphins for over 20 years, but it wasn’t until 2006 that we first sighted the common dolphins that we believe to be resident to Port Phillip, along the Mornington coastline. Find out about our southern marine treasures and what we are doing to manage them. Leadership “Environmental Leadership” is the third element of the Institute’s strategy that acts to connect and strengthen our overall work.
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