Malnourished juvenile humpback whale washed ashore on German beach, shocking scientists.

Eugenie Sage wants to phase out single-use plastic bags but no decision has been made.

It we don't act now, more plastic will be in the oceans than fish.

Tragic images of ocean life swimming in plastic belies a bigger problem, researchers say.

50 years on from the Manapouri saga, NZ's laws have failed its environment, writer argues.

A ship which ran aground in 1865 has been uncovered by unusual tidal conditions.

Not enough is known about how these materials break down in the environment.

Scientists are appealing to the public to find three sea seismometers lost near Gisborne.

NZ has its very own population of the largest animal in the world: the blue whale.

Scientists have just detected a record, seven-storey-high wave in the Southern Ocean.

Anyone who thought it had become too sanitised has been proved to be way off the mark.

PM says new resolve on climate change and trade for Commonwealth leaders.

Marine heatwaves are growing longer, stronger and more frequent thanks to climate change.

Kiwis may not know they just lived through an event freakish even under climate change.

Temperatures were more than 2C above average in our summer of extremes.

The incident is captured in world first footage.

Two green sea turtles, Oscar and Kiwa, have been released into the ocean after being rescued from 90 Mile Beach almost two years ago.

Two green sea turtles have been released after being rescued almost two years ago.

GoPro footage captured the heart-stopping moment a shark charged full speed at a diver.

Government considering plastic bags ban after 65,000-strong petition handed to Parliament.

During Earth's last big warming cycle, something dramatic happened in the Southern Ocean.

An East Coast waka voyage has encountered a surprising amount of ocean plastic pollution.

Number of NZ sea lion pups on subantarctic islands falls 40 per cent in just 20 years.

What impact is dumped rubbish having on our marine life?

What could be a record summer has come with warmer water that "revved up" Cyclone Gita.

Nicky Sinden wants people to head down to their local beach on Sunday for a clean-up.

The Underwater Photographer of the Year 2018 has just been announced.

Crayfish quotas are not allowing the fish to survive in northern waters.

He described the moment as "beautiful" and "other-worldly".

The astonishing thing is not what it means to us, but what it means to them.