A superyacht belonging to the manager U2 has joined some of the world's finest vessels in the Viaduct Harbour.

"It was cool. It turned on its side and just sat there looking at us just under the water."

Police are expected to this afternoon reveal details of why a diver reported to a Hawkes Bay police station after an extensive two-day search for him near Porirua.

Four adult whales have died after beaching themselves at Port Waikato but Conservation Department staff have successfully refloated a fifth.

The diver missing for two days near Titahi Bay has been found - after walking into a police station in Hawke's Bay.

Police say they are confident a body found on a lake near Rotorua this morning is that of a missing teenage jetskier.

The search for a paua diver missing at Titahi Bay in Porirua resumed at first light today.

A new Rainbow Warrior is approaching completion in a German shipyard.

Police and Navy divers are continuing searching into the evening for the body of a teenage boy presumed dead after a jetski accident on a lake near Rotorua, while family and friends continue to hold vigil on the shoreline.

Police have named the paua diver missing in Titahi Bay in Porirua, who they believe may still be alive.

Police say a paua diver missing in Titahi Bay in Porirua may still be alive.

More than 40 people are searching for a diver missing near Titahi Bay, Porirua, since last night.

A distressed woman screamed into her cellphone for help as the six-metre boat she and her father were on capsized and sank.