Underwater image of three bottlenose dolphin Tursiops truncatus, Ponta do Ouro, Mozambique - stock photo

Using dorsal fin identification, some 250 resident dolphin have been identified in an observed 40 to 70-kilometre home range that includes the bay of Ponta do Ouro. The exact range of this pod is not really known and estimating population size and range is a daunting task. The dolphin split up regularly with some going to deeper waters to feed, returning sometimes weeks later. Often bigger, more dominant males are found offshore yet they too return to the pod inshore. There is a constant process of splitting and reuniting a process termed‚ fission and fusion.