Wellington, New Zealand, Rabi'II 25, 1436, February 14, 2015, SPA -- About 140 pilot whales that stranded themselves on a remote stretch of New Zealand beach have died, but conservation workers and volunteers are hoping the remaining 60 or so will survive after they managed to get them refloated, AP quoted an official as saying Saturday. The geography of Farewell Spit on the South Island seems to work against whales, which regularly become stranded there. The stranding of 198 whales on Friday was one of the largest in recent years and prompted 80 workers and volunteers to help out. By late Saturday, 140 of the whales had died, said Department of Conservation area manager Andrew Lamason. He said the workers and volunteers worked throughout the day to keep the surviving whales watered and covered before refloating them during Saturday night's high tide. "We've had a really good crew of volunteers, and people have been wanting to come from all over the country," Lamason said. He said the surviving whales had moved to deeper water. But he cautioned that while hopes for their survival were high, whales had been refloated in the past only to return and get stranded again. Experts describe Farewell Spit, located on the northwest corner of the South Island, as a whale trap due to the way its shallow waters seem to confuse whales and diminish their ability to navigate. Pilot whales grow to about 6 meters (20 feet) in length. -- SPA 21:59 LOCAL TIME 18:59 GMT www.spa.gov.sa/w