Morecambe moved five points clear of the bottom two with a 0-0 draw against Cambridge at the Globe Arena.It was Morecambe's 18th draw of the season but it may have been a vital point in their hopes of securing their Football League status.In a game of few chances, Cambridge almost snatched the three points at the death when a header from Morecambe defender Steven Old was cleared off his own line by Alex Kenyon.Jake Carroll also had a great chance after a late, flowing move that ended with a shot that flew over the bar and Harrison Dunk found the side netting as the U's ended the game on top.Before then Morecambe had the best chance when veteran Kevin Ellison diverted an Aaron McGowan cross wide from close range when he looked certain to score.Morecambe started the brighter and Callum Lang was played through on goal by Adam Campbell in the opening stages but saw his right-foot shot well saved by Dimitar Mitov low to his right hand side.Lang looked the Shrimps' biggest threat throughout the half and fired an effort over from a tight angle before Cambridge came into the game.George Maris produced their best moment with a 20-yard shot that forced a save form Barry Roche.