Detailed text transcripts for TV channel - CNN - 20110423:19:25:00
The way it works is we get waves coming through this region. eventually the waves eat away the shoreline. >> the reefs actually stop and ab bosh the wave energy. behind the reefs, the water flattens out. >> the wake of our own boat immediately lays down when it hits the reef back here. it's amazing. >> in mobile bay, we're using a different technique. >> looking good. >> that is we are laying bagged shell down on the floor of the gulf. volunteers formed a human chain and passed painstakingly one bag of oyster shell to each other to create these reefs. we're going to see oysters come in on thes...