Difficult to find?

Lost snake species found in Mexico 
http://www.bbc.co.uk/news/world-latin-america-27481016




A lost species of snake that eluded scientists for nearly 80 years has been rediscovered in Mexico, a US museum says.
The Clarion Nightsnake was found on the Pacific island of Clarion in Mexico by a researcher from the Smithsonian Institution in Washington DC.
The snake was first discovered in 1936 by naturalist William Beebe.
Although never declared extinct, it was struck from the record after scientists were unable to rediscover it.
Unless you stood on it you wouldn't see it would you?