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Artificial reefs made of everything from oil rigs to subway cars to concrete rubble are sunk these days to the ocean floor to provide homes for marine life. But are they actually helpful?

This entry was posted on Friday, December 28th, 2007 at 12:20 am and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.