>       I hate to go more into this, but are motives behind these
>types of reefs truly environmental benefits or just ways cities have
>devised to cheaply get rid of junk? The positive PR spin that I hear
>from such stories makes me wonder/worry if environmental impact
>studies have been done holistically, objectively and without bias.

Such "reefs" are great for providing homes and create a huge
surface-area for habitation. Toxic leaching is certinly a concern. Of
more concern to me, however, is the waste of materials, which should
be being recycled.
--
Andrew Grebneff
Dunedin
New Zealand
Fossil preparator
Seashell, Macintosh, VW/Toyota van nut
‚ Opinions stated are mine, not those of Otago University
"There is water at the bottom of the ocean"  - Talking Heads

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