Russian agency starts investigation into shipwreck in Mediterranean Sea - FACTBOX: What to know about Ursa Major shipwreck in Mediterranean Sea - Around 250 treasure-laden shipwrecks may lie in Portuguese waters, expert says - SS Save Our Ship! A new product might just be the secret in saving famous underwater shipwrecks from the elements - At least eight migrants drown in shipwreck off Greek island of Samos - Small boat shipwrecks continue in the English Channel - At least 11 people dead after two shipwrecks in the Mediterranean Sea - 10 Shipwrecks Are Found Off the Coast of a Far-Flung Greek Island - Mysterious 230-foot-long shipwreck found at bottom of Baltic Sea - Study reveals how shipwrecks are providing a refuge for marine life