Porpoise, Common or Harbour

This species of porpoise is grey in colour and grows to between 1.5 and 2 metres in size. Adults can weight between 60 and 70 kilograms.

In Cook's time it was not uncommon for small groups of Harbour Porpoises to hunt fish in the River Thames.

While the Harbour Porpoise is not regarded as an endangered species, there has been significant population decline in waters that are fished commercially with nets.