The crew is safe, but the marine mammals did so much damage to the Polish sailing yacht that it couldn't make it back to port
A UNESCO representative says the country has suffered an "inestimable loss"
The military fortification was discovered near the ancient city of Volubilis
Coordinated by Unesco, the project will examine the underwater site between Sicily and Tunisia
Found in a Moroccan cave, the prehistoric jewelry dates to between 142,000 and 150,000 years ago
The structure in the port city of Tangier has served as a diplomatic residence, consulate, espionage headquarters, museum and library
Confederate agents seeking European support were imprisoned by the U.S. consul, which ignited international protest
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