Salvage crew returns to New Zealand oil spill ship

Salvage workers have returned to a cargo ship stranded off New Zealand's coast which is leaking oil onto a shore renowned for its beaches and wildlife.

With cracks appearing in the hull, they are assessing the possibility of pumping the remaining fuel oil from the Rena before it begins to break up.

Nearly 90 containers, some carrying hazardous substances, have fallen off the ship and some have washed ashore.

Duncan Kennedy reports from Sydney.