Wildlife experts concerned dolphin wearing a T-shirt may be in trouble.

Heartbreaking footage shows a mother dolphin trying desperately to save her calf from Japanese hunters who planned to sell the animals to aquariums.

The number of unprovoked shark attacks across the world fell last year, in the wake of a record figure in 2015 that scientists partly put down to warmers waters created by a strong El Nino system.

COMMENT: A strong correlation was found between the state of the country's fish stocks and the quality of its fisheries management, writes Tim Pankhurst.

A home belonging to world renowned marine biologist Bill Ballantine is on the market after more than 50 years.

A yacht that struck an object in the Hauraki Gulf sparks an overnight rescue.

A 300kg leopard seal looks to be in Auckland to stay, as the hefty visitor makes itself a summer spectacle for ferry commuters.

The little girl who had been missing at sea with her father for almost a month is due back in New Zealand in the next few days.

An extradition order is not being sought for a Kiwi yachtsman who sailed to Australia with his young daughter.

Getting closer than 50m to a killer whale could set you back a couple hundred thousand or land you behind bars.

In the second of a five part series on Auckland's big blue backyard, science reporter Jamie Morton talks to seabird expert Dr Brendon Dunphy.

The playful and curious orca entertained those on the boat for about 20 minutes.

Science reporter Jamie Morton looks at some of the hardy little creatures that live in our rock pools.

A sleek, human-driven submarine and a cutting-edge underwater sensing system are among the impressive innovations of a team of Auckland Uni engineers.

In Auckland's Hauraki Gulf, you can find one quarter of the world's seabird species - and around 20 per cent of its whale and dolphin species.

This is what you do when you need to take home a massive fish.

Whale Watch is back on the water in Kaikoura.

This week, the Herald takes a look at Kiwis who are dedicated to helping our animals. Today Jamie Morton talks to Project Jonah's Daren Glover.

Missing yachtie likely to be sailing his tiny catamaran to Australia, where he has disappeared with his 6-year-old daughter Que previously, according to an expert.

Small shark bites woman snorkelling in marine sanctuary.

The adoptive grandmother of Alan Langdon is heartbroken the Kawhia man and his 6-year-old daughter Que have not been heard from in 11 days.

For Fat Leonard, conning the U.S. Navy was a big piece of cake.

The disappearance of a father and daughter who set sail in a small catamaran 10 days ago is "very upsetting" for the family's local community.

Locals were unable to save whale that repeatedly stranded on popular beach.

COMMENT: Tiny little specks of land hundreds of kilometres from New Zealand may hold key secrets about the future of our planet.

Kiwi anglers will be able to log their catch this summer - and contribute to data around our fish stocks - thanks to a free app.

Hawke's Bay Regional Council will consider marine reserves early next year, with a recent Environment Court decision giving regional

A large leopard seal seems to have made its home in the waters of Auckland harbour.

A popular fishing competition which earlier this year led to a winner being asked to take a lie-detector test has rewritten the rules

A stunning summer's day in Wellington has attracted some aquatic visitors to the coastline, with locals spotting orcas and dolphins.