The Hunting of the Snark (version 4)
Author: first_name: Lewis
last_name: Carroll
Language: English
Year: 1876

The Hunting of the Snark (An Agony in 8 Fits) is a poem written by English writer Lewis Carroll. It is typically categorised as a nonsense poem. 
The plot follows a crew of ten trying to hunt the Snark, which may turn out to be a highly dangerous Boojum. The only one of the crew to find the Snark quickly vanishes, leading the narrator to explain that it was a Boojum after all. As you would expect! - Summary by Craig Franklin