A chilling video caught the moment a large shark , supposedly bearing a striking resemblance to a great white, was spotted in a popular holiday spot. The big fish shocked sailors who were taking part in a race in the Bay of Palma, Spain . The creature was initially thought to be a mako shark, one of the fastest known shark species which can reach speeds of nearly 50mph in bursts. Marine biologist Gader Muntaner after speaking to the man who caught the viral video - Jacopo Rena - and analysing