The Rangitāne iwi fought to own the 942-hectare Pūkaha Forest.
About 40 were released in the park in 2017 and 2018 to kickstart a breeding programme.
The population has declined by 91 percent.
Experts warn a lack of information about our oceanic shark populations makes it hard to know how they're doing.
More than 4000 traps have been set up over the past two years - the largest community trap network in New Zealand.
The New Zealander was left fighting for his life after his encounter with a Fer De Lance snake two weeks ago.
DoC is exploring new ways to make sure facilities at popular national parks aren't overwhelmed.
DoC is asking for sightings of Hector's or Māui dolphins.
Their population has dropped a whopping 91 percent over 20 years.