What happens to artificial reefs in the future?

E-Magazine posts an interesting perspective on the artificial reef debate in response to a reader's question.

The Alabama Department of Conservation and Natural Resources, which sunk 100 obsolete combat tanks in 1994, estimates that most artificial reefs will last no longer than 50 years, meaning they could threaten fragile marine life as they break up

Read the entire article here:
http://www.emagazine.com/view/?1867&src=