十年前联合国科教文组织(unesco)通过法案保护100年前的深海沉船。现存问题是是否应该保护那些历史少于100年，而且有人不幸丧生的船只残骸。
polish authorities recently banned
1 from coming within 500 metres of the wilhelm gustloff. the german ship was sunk by a
2 submarine in the baltic sea in 1945. more than 9,000 lives are thought to have been lost - the single largest death
3 at sea.
last month, seven european
4 associations
5 dutch
6 firms which they said were
7 sailors' graves. they'd been searching for
8 metal aboard three british
9 10 and sunk off the netherlands in 1914.
unesco's convention on the protection of underwater cultural heritage, which was adopted ten years ago, does not apply in these cases, because it only protects
11 more than 100 years old.
whether ships and their dead should be left to rest in peace, or are sites of
12 archaeological interest, can be a
13 and often emotional question.
archaeologists say their job is the recovery and
14 15 of priceless artefacts. many of them reject the label "treasure hunters".
but, with deep-sea exploration equipment costing tens of thousands of dollars a day, they need to cover their costs somehow. it's no surprise, then, that a ship
16 with gold, silver and other valuables is seen as the greatest prize.
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