Fisheries

As New Zealanders search for the summer sun, 38 researchers and crew will board RV Tangaroa tomorrow for a six-week science voyage deep into the waters of Antarctica.

Initial data suggests careful handling of released snapper could help fishers save thousands of fish annually.

NIWA proudly owns and operates RV Tangaroa, a 70 m Ice Class scientific platform.

From scallop beds to trawl nets, a little bit of data science can make a big difference. Melissa Bray explains.

The tiny ear bone of a fish holds a wealth of information. Gather enough and you get a snapshot of what’s happening beneath the waves. Stuart Mackay explains.

A fish has been caught in the same location that it was tagged, nearly 20 years ago to the day.

A fish has been caught in the same location that it was tagged, nearly 20 years ago to the day.

Mia Blyth catches up with a marine biologist hunting for ocean ghosts.

New Zealand has just over 50 native freshwater fish species. Of these, 85 % are endemic and 75 % are deemed to be at risk of decline or are threatened.

NIWA and University of Auckland masters student Georgia Third is getting up close and personal with snapper guts and teeth to understand the differences between biologically distinct snapper populations in New Zealand.

A four-year research programme focused on the co-management and restoration of our freshwater taonga species.

A six-metre-long autonomous vessel is equipped with artificial intelligence and a range of data gathering equipment, including a battery powered echosounder that can estimate the size of fish populations.