Sharks are an apex predator with a crucial role in the ecosystem and can be indicators of the health of an environment, so they are being studied by scientists from Niwa and Victoria University of Wellington.
Niwa fisheries scientist Dr Brit Finucci said Fiordland National Park was an incredibly unique ecosystem.
"We know very little about the sharks that live in this area, but we do know that the Fiordland environment is at risk from climate change.
"Now is an opportune time to study how sharks may be impacted by a changing environment in the future."
The broadnose sevengill was commonly observed in Fiordland, reaching more than 2.5m in length.
It was a globally threatened species, and fishing activity was reducing shark numbers in some locations.
However, little was known about the impacts of climate change on their health and population.
Dr Finucci said the project, funded by the Save Our Seas Foundation, resulted in 11 sharks being tagged, and divers installed 29 acoustic receivers on the seafloor.
"The sharks that we tagged were calm and relaxed, and it was amazing to see them so close when usually we only get glimpses of them whilst diving.
"The tags will transmit data for up to 10 years and the receivers we put on the seafloor will collect data every time a shark swims near it."
The team will return to Fiordland every six months to gather the data from the receivers.
