Technical mishap freezes 800 rare New Zealand snails

Conservationists in New Zealand have blamed a technical glitch after 800 endangered giant land snails were accidentally frozen to death. The rare snails, rescued from an area earmarked for coal mining, were kept in a temperature-controlled room run by the Department of Conservation (DoC).

However, a faulty gauge sent temperatures plunging below freezing. Staff at the DoC's West Coast Conservancy in Hokitika are said to have been "very upset". The Powelliphanta giant land snails were among 6,000 taken from the Stockton Plateau on South Island several years ago to make way for coal mining.



About 4,000 of those have been relocated to new habitats. John Lyall, the conservancy's technical support manager, said a temperature probe in one of three containers had failed, making the room colder than the snails could stand.

He said the incident had been "very upsetting" for staff, who were committed to the care of the snails. "We organised to have the probe replaced as soon as we noticed the problem," Mr Lyall said. "And we've instituted a more regular set of monitoring checks and are currently organising to install an alert system."

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