Wanted: Kiwi crews for international superyachts. Must be comfortable cruising the globe, chatting respectfully with eccentric billionaires and celebrities and scrubbing toilets for weeks on end.

The beleaguered Interislander ferry Aratere cancelled another sailing this morning - in what is only its second day back in service after a 3-month refurbishment.

It returned to service yesterday after eight months - and the troubled ferry Aratere has had a sailing today cancelled.

Italy's Costa Concordia cruise ship has floated for the first time since it crashed in 2012, its rust-coloured hull emerging from the waves off Giglio.

The Green Party is aiming to make every river in New Zealand clean enough to swim in.

Long-distance kayaker Scott Donaldson has never appreciated having a shave or a hot pie so much, but it's being able to move around in more than a metre of space that he's enjoying most.

Collisions, ill-timed power failures, near misses and fires are among more than 50 dodgy incidents involving ships around our coasts over the past year.

For the first time in eight months the Interislander ferry Aratere will cross the Cook Strait.

Strong winds off the coast of Taranaki have pushed trans-Tasman kayaker Scott Donaldson even further from shore.

A young entrepreneur behind a business selling submarines has been charged over an attempted $22 million insurance scam.

Anti-oil exploration protesters have put up banners in Wellington ahead of the National Party's Annual Conference.

A grey 6.6m Comsub, which the owner says has been used to explore waters near Half Moon Bay and Waiheke Island for the past few years, is for sale.

A sea floor diva known as the “disco clam”, which earned its name from vivid displays of flashing light, has revealed the secrets of its dazzling moves.

An urgent aid mission will get underway today to drop vital supplies to a kayaker attempting a solo trip across the Tasman Sea.

Interislander management have refuted claims by NZ First leader Winston Peters that the ferry Aratere has blown an engine on its return voyage from Singapore.

Conservation Minister Nick Smith says the risk to the tiny number of Maui's dolphins from a new block of land listed for oil and gas exploration is 'small'.

"This is Waiheke's Springbok Tour," says John Hawkesby, the bon vivant who has become the mouthpiece of dissent on the former hippie outpost of Waiheke Island.