Via: n.rat's photostream
"The line-up at the start of the 1954 250cc TT race, on the Isle of Man. The bikes are fitted with new fairings which soon attracted the nick-name dolphin, for obvious reasons. The name has stuck to this day to describe the type of fairing fitted to most modern racing machines. A mechanic is changing a spark plug on the nearest bike, using the door in the side of the fairing for access."