New York, Sep 12 (IANS) In a surprise find, palaeontologists have discovered the World's first k**wn swimming di**saur - a 15-metre-long behemoth with a crocodile-like face. The creature called Spi**saurus aegyptiacus had feet well suited to paddling and a sail-like structure rising from its spine. "It is the first di**saur that shows these really incredible adaptations. There is ** doubt in my mind that Spi**saurus would have done most of its hunting in the water," claimed team leader Nizar Ibrahim from University of Chicago in Illi**is.