People enjoy the fine weather on the coast at Wembury during the first ever nationwide survey to map the location of the threatened and creatures on March 24, 2011 in near Plymouth, England. Often found on the coast, and particularly in the south west of England, the number of oil beetle species found in the UK has halved in the last 100 years and the survey will help establish the whereabouts of the remaining four species and boost efforts to secure their future. The survey is being launched today by Buglife: The Invertebrate Trust and the National Trust in partnership with Natural England and Oxford University Museum of Natural History. (Photo by Matt Cardy/Getty Images)

Buglife's Conservation Officer, Andrew Whitehouse and Dale Harrison look at oil beetles as part of the first ever nationwide survey to map the location of the threatened and creatures on March 24, 2011 in near Plymouth, England. (Photo by Matt Cardy/Getty Images)

Buglife's Vice President Nick Baker looks at a oil beetle as part of the first ever nationwide survey to map the location of the threatened and creatures on March 24, 2011 in near Plymouth, England. (Photo by Matt Cardy/Getty Images)

A oil beetle passes a path during the first ever nationwide survey to map the location of the threatened and creatures on March 24, 2011 in near Plymouth, England. (Photo by Matt Cardy/Getty Images)