Nearly 80% of those questioned who thought they would swim when abroad planned to swim in the sea.

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Eels, however, swim out to the Sargasso Sea, in the North Atlantic, to reproduce.

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Mr Strel, who is campaigning for the World Wide Fund for Nature, began his swim in Germany in June and hopes to reach Sulina on the shores of the Black Sea.

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We now swim in a sea of data and the sea level, so to speak, is rising rapidly.

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This is the sea in which Muslim students who go on to carry out acts of terror are able to swim.

CENTERFORSECURITYPOLICY: Center For Security Policy