Dangerous and murky waters in our ports and marinas can make it hard for divers to carry out biosecurity checks for introduced organisms.  Niwa has been doing marine surveillance on behalf of MPI for more than 15  years.  It’s pioneering the use of specially customised underwater remote operated vehicles (ROVs), or drone cameras, which are adding a third dimension to the images and information divers are currently able to  get. 

Niwa marine ecologist and scuba diver Leigh Tait explains to Kathryn Ryan.