The opponents of the project worry that the vast club will choke their scenic city of red-roofed stone houses and aquamarine sea, dubbed the Pearl of the Adriatic, and would represent an environmental hazard without bringing financial gains for Dubrovnik residents.

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Iranian Lenj vessels are traditionally hand-built and are used by inhabitants of the northern coast of the Persian Gulf for sea journeys, trading, fishing and pearl diving.

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Macau sits on a horn of rocky coastline, where the Pearl River washes into the South China Sea.

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The flow from the source of the Pearl River, which empties into the South China Sea near Hong Kong and Macau, has been reduced to a trickle from a waterfall.

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Unlike the Pearl, Jellyfish 45 is not intended for the open sea.

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Her boat, American Pearl, upended in the rough conditions and tipped her into the sea - forcing the rower to relive her memories of being rescued after her unsuccesful 1998 attempt on the crossing when Hurricane Danielle capsized her 15 times.

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