Medieval Shipwreck Unearthed Beneath Barcelona's Mercat del Peix / Archaeologists stunned after finding huge 500 year old shipwreck in 'city of archaeology' / Archaeology breakthrough as experts uncover 'unprecedented' secrets of royal shipwreck / 'Remove shipwrecks before they get in food chain' / Ancient shipwreck reveals secrets of 15th-century Danish flagship / 2,600-year-old shipwreck is raised from waters off Spain / Hidden treasures: 250 shipwrecks lie unprotected / The fierce battle over the 'Holy Grail' of shipwrecks / Historic day for Murcia: Mazarron shipwreck recovered / Inside 300-year-old abandoned shipwreck which sank after 'ignoring laws' - but mystery still surrounds who was at fault