See NIWA scientists talking about their work, along with fascinating animations and underwater footage.

SHMAK Stream Life – Collecting Benthic Macroinvertebrates using the Stone Method
If you don’t have a net, you can collect stones from the streambed and collect the invertebrates that are clinging to the stones.
SHMAK Stream Life – Collecting Benthic Macroinvertebrates using the Kick-Net Method
Use a net & the kick-net method to collect a greater range of benthic macroinvertebrates and more accurately assess the diversity of the community.
SHMAK Stream Life – Collecting Benthic Macroinvertebrates in Muddy-Bottom Streams
If your stream has a muddy-bottom or soft-bottom (made of silt or mud), you need to use a different method than if your stream has a stony-bottom.
SHMAK Stream Life – How to get your Benthic Macroinvertebrate Sample Ready for Sorting
Before you look at what animals you have collected, follow these methods to clear away debris (stones, sand, leaves, twigs) from your sample in the net.
SHMAK Stream Life – How to Sort and Identify your Benthic Macroinvertebrate Sample
Use an ice-cream tray to isolate and separate your invertebrates. The Benthic Macroinvertebrate Field Guide helps you with identification.
SHMAK Habitat – Streambed Composition
Two methods for describing streambed composition: the visual assessment method is quicker while the Wolman walk is more accurate.
SHMAK Habitat – Visual Habitat Assessment
The SHMAK visual habitat assessment gives your stream a score that you can use to assess changes over time or compare streams.
SHMAK Habitat - Rubbish
The SHMAK method for rubbish involves collecting and identifying all the rubbish (litter) in the stream and on the stream banks.
Stream Site Assessment
SHMAK Stream Site Assessment - How to record some basic information about your stream site so you can interpret your results.
Science on the high seas
Sustainable fisheries depend on good scientific data about fish stocks.
2019 NIWA staff photographic competition - winning entries
Check out the winning entries from the 2019 NIWA Staff Photography Competition.
2019 New Zealand Climate Summary
NIWA climate scientist Nava Fedaeff presents the NIWA annual climate summary for New Zealand 2019.
Overview of SHMAK
How healthy is your stream? SHMAK—the New Zealand Stream Health Monitoring and Assessment Kit—has been designed to help you find out.
Introduction to SHMAK
Most of us are visual learners. So we’ve created some short videos that demonstrate the methods outlined in SHMAK.
Health and Safety in the Field
Health and safety is the most important element of any activity. Watch this video before you go out into the field.
NIWA - Making a difference
An introduction to NIWA scientists and the wide range of work they do. Our staff work across freshwater, climate and ocean research platforms throughout New Zealand and the wider Pacific region.
Diving deep to check up on our lakes
NIWA scientists jump overboard to check out the health the Rotorua Te Arawa lakes.
Freshwater fish swim their all for science
The tiny inanga have been plucked from Waikato streams and held in a darkened laboratory for the last month, undertaking highly advanced testing to find the strongest, fittest and fastest fish.
Robotic vehicle on the lookout for biosecurity pests
Foreign marine pests can threaten our marine life and it’s important to find them early before they can set up home here.