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.

Guests have been warned not to skinny-dip or take selfies with the fish.

Boaties had an incredibly close encounter with orca at Ponui Island near Waiheke. Credit: Jitske Braaksma

A pod of dolphins played with holiday goers in the Bay of Plenty in the second sighting in two days. Credit: Ella Southward

Microplastic particles polluting Earth's oceans now found in Antarctica's pristine waters.

People in Auckland continued to swim at Milford Beach despite a health warning being put in place after raw sewage contaminated the water.

The last time summer was running this hot, Nazis ran Germany. What's been the difference?

Plastics in the oceans are killing corals by increasing their risk of becoming diseased.

Passengers on board Auckland Whale & Dolphin Safari were in for a rare natural show on Tuesday when they discovered a whale carcass complete with feeding sharks floating north-east of Waiheke Island. / Footage supplied by AWADS.

How are oceans faring with pollution, fishing and climate change? Simon Thrush explains.

Record "marine heatwave" could fuel a low-pressure system forecast to hit NZ next week.

They're called dead zones - patches of water that kill life - and NZ isn't immune to them.

University of Auckland researchers Rosalyn Putland and Associate Professor Craig Radford from the Institute of Marine Science combined sound recordings over a nine month period with automatic ship tracking data to track underwater noise contributed by shipping.

The Kerkhof family were out fishing when they came across a pod of about 20 bottlenoses.

International scientific research ship JOIDES Resolution tackles Zealandia missions.

What will happen to NZ's oceans in the future? A cutting-edge model will soon tell us.

Takapuna Beach is closed after sewage flowed into the swimming area between the flags. Credit: Dean Purcell

Understanding prehistoric global warming events could tell us much about Earth's future.

It is awful. People just don't care, it's everywhere, it's everywhere.

Auckland councillor Mike Lee talks with Larry Williams about his fears that an environmental disaster could happen if RMS Niagara collapses and releases oil into the sea.

Scientists have gathered a sediment sample from deep below the Pacific Ocean's surface.

Scientists exploring the Kermadec Trench believe they have retrieved the deepest ever sediment sample from the bottom of the ocean using a wire-deployed corer. The sample was obtained a week ago at 9994m deep in a mission that took six hours to complete. / Supplied by NIWA