Mt Maunganui surf lifesavers say they will keep looking for Jack Dixon "for as long as it takes" despite no sign of the missing boy for a week.

Rogue waves - mountainous swells that form at sea without warning - have been blamed for countless maritime disasters.

According to NASA, "for the first time in modern history, the eastern basin of the South Aral Sea has completely dried."

As $100 million of shiny new craft go on display at Auckland's On the Water Boat Show, the Hauraki Gulf has received a damning report about its health.

New research has confirmed waters off Auckland are crucial breeding grounds for a keystone shark species.

Centuries of over-exploitation of whales for their meat and blubber has seen populations of most species plummet. But with no small amount of irony, the tables have turned with research discovering that we need whales for a healthy marine ecosystem.

The moa were driven to extinction due to human activities - over-hunting and habitat destruction. Here are 10 other animals mankind has wiped out.

Global warming is melting sea ice so fast that more than half of Antarctica's population of emperor penguins are set to be wiped out by the end of the century, according to alarming new research saying they should be listed as an endangered species.

NZ's oceans are undoubtedly important. Our Exclusive Economic Zone (EEZ) is the fifth largest in the world, but it's not just size that puts us on the world map, writes Peter Hardstaff.

Not long after the Malaysian Airlines flight MH370 was declared missing, the world's attention was focused on a remote, poorly known area of the Eastern Indian Ocean as the possible location of the lost aircraft.

"Sea," said King Canute, the 11th-century Danish King of England, "I command you to come no further!"

The social media phenomenon known as the Beached Az whale has been killed off by its creators to highlight the plight of marine life ahead of World Oceans Day.

Hollywood director James Cameron is among those lamenting the loss of a robotic research submarine which imploded in the Kermadec Trench.

One of the most "disastrous breeding seasons" in recent years has hit endangered yellow-eyed penguin colonies along Otago's coast.

New Zealand's endangered yellow-eyed penguin have been found to follow the line of swooping seabirds - literally - when it comes to reaping the food stirred up by trawlers.

'Wow, this guy's a whopper,' said experts of a 1.5m monster jellyfish that washed up on a Hobart beach last month. So what does its sting feel like?

It all began in December 2012, when Jose Salvador Alvarenga, an El Salvadorian fisherman, boarded his 7m fibreglass fishing boat in the village of Costa Azul on the coast of the Mexican state of Chiapas.

Sections of the Northwestern cycleway will most likely be underwater and low-lying sections of Auckland's motorway network are at risk of flooding during high king tides forecast for later this week.

Asteroids like the one that wiped out the dinosaurs on Earth could have shot life to Mars or the moons of Jupiter and Saturn, US scientists have said.

In the last of a three-part series, Young New Zealander of the Year and CEO of the Sustainable Coastlines Charitable Trust ,Sam Judd, discusses the United Nations Environment Programs’ Global Partnership on Marine Litter.

Every day, millions of tons of inadequately treated sewage, industrial and agricultural waste enters the world's waterways, writes Sam Judd.

Sam Judd writes that perhaps the biggest environmental problem we currently face is the contamination of our waterways by nutrients.

The rough seas of the southern Pacific Ocean are set to be the focus of resource consent debate as a mining company's bid to dredge the sea floor comes up against the fishing industry and environmentalists.

One hundred grey shark fins, and one orange fin, are floating in Wellington harbour today to mark the final day of shark awareness week.

Environmental columnist Sam Judd takes a look at the disastrous consequences of the Japan earthquake on our food chain.