A 22-year-old New Zealand man has been arrested over the death of an 11-year-old girl in a boating accident in England.

Footage from the storm-battered Pacific Sun has emerged showing those on board hanging on for their lives as they dodge waves of furniture.

Two boaties were injured - but miraculously survived - when their launch was cut in two and sucked under the Waiheke ferry.

Police piecing together the fatal last minutes of the sunken trawler Oyang 70 are hoping to finish interviews with the surviving crew this week.

Just nine of the 63 whales found stranded on a Northland beach on Friday have survived.

Eleven pilot whales have been successfully transported and refloated at Matai Bay after a mass stranding on Karikari Beach near Kaitaia yesterday.