http://images.google.co.uk/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Narwhals_breach.jpg/800px-Narwhals_breach.jpg&imgrefurl=http://commons.wikimedia.org/wiki/Image:Narwhals_breach.jpg&h=509&w=800&sz=76&hl=en&start=1&sig2=vRKiQCRdwRfSrAWuVV8ktg&tbnid=H3wZp7MNZlTSgM:&tbnh=91&tbnw=143&ei=8Xy3R5OTFomcwwGavbTbCg&prev=/images%3Fq%3Dnarwhals%26gbv%3D2%26hl%3Den%26sa%3DG

Did you know they existed? I bloody didn't.