The president of Royal Caribbean International toured ports of call in Alaska on Friday to apologize in person for the pollution of the state's waters by the cruise line's ships. Royal Caribbean last month agreed to pay a record-high $18 million fine to U.S. authorities for dumping oily bilge and chemical wastes at sea, as well as into U.S. ports and wild waterways. The line plead guilty to 21 felonies, including falsifying logs and lying to the U.S. Coast Guard, and admitted Royal Caribbean ships were rigged with secret bypass pipes, which were used to dump used dry-cleaning chemicals and other waste. The fine, the highest ever assessed by a cruise line for polluting U.S. waters, followed $9 million in fines Royal Caribbean agreed to pay in 1998.