National Institute of Water and Atmospheric Research (NIWA), Antarctica New Zealand and the Australian Antarctic Division are undertaking a six-week research initiative in the Southern Ocean on areas of importance to humpback and blue whales and Antarctic toothfish.
A video has been produced to show how NIWA and a range of partners are collaborating to understand global ocean acidification and how increasing ocean acidity is affecting shellfish and the aquaculture industry.
NIWA scientists are among a small group working to understand why New Zealand's sea lion population is declining. Using a range of methods, they're finding that the cause of the decline is varied, and includes changes in diet, bacterial infection, low pupping rates and low survival rates.
Sightings of the whales, the world's largest animal, are rare and they remain one of the planet's most elusive creatures. They were intensively hunted during the whaling era in the Southern Hemisphere, dramatically reducing their numbers.