Divers' filthy Christmas keeps Tauranga waters pristine

Some divers in Bay of Plenty spent Christmas cleaning algae and barnacles from ships off the coast of Tauranga. There has been an increase in demand for the work due to a shortage of international cleaning facilities and stricter biofoul thresholds. Just last week, cruise ship Viking Orion chose to leave New Zealand waters to be cleaned after algae on its hull meant it was only given restricted port access. Niva Chittock reports.