Chicago has its very own deep water reef: Morgan Shoal | ChicagoLIVE
Chicago has its very own deep water reef: Morgan Shoal | ChicagoLIVE

Chicago has its very own deep water reef: Morgan Shoal | ChicagoLIVE

Morgan Shoal is a 425-million-year-old limestone reef located just off Chicago's South Side shoreline. Field Museum paleontologist Paul Mayer joins ChicagoLIVE to explain the history of the reef. 

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