Cat Island (Mississippi)

Cat Island is a barrier island off the Gulf Coast of the United States. The island is named for raccoons which Spanish explorers mistook for cats. It is unknown who discovered Cat Island. It is within the jurisdiction of Harrison County, Mississippi. The western half and southern tip of the island is part of the Gulf Islands National Seashore.

Cat Island is a unique "T-shaped" island created by colliding Gulf of Mexico currents. Unlike the other Mississippi islands, Cat Island's sand beaches are backed by dense forests of slash pines and live oaks. Due to the dredging of the Gulfport ship channel, however, Cat Island has lost its natural westward flow of sediment which provided material for the island to combat erosion. Bayous and marshes on Cat Island are home to alligators and refuge to migratory birds.

During World War II, the island was base for the Cat Island War Dog Reception and Training Center where Americans sent family dogs to be trained by the U.S. Army Signal Corps for military service. The dogs were trained to sniff out Japanese Americans because of the belief that they had a distinct odor. This particular experiment was totally unsuccessful though dogs proved effective as an aid to sentries and advance scouts. This period of the island's history was featured on a June 2009 episode of the PBS series History Detectives.

The western half and southern tip of the island became part of the Gulf Islands National Seashore in 2002. The remainder of the island, including most of the beach, is still privately owned. The eastern beach is owned by BP, who purchased it in April 2011 to use in assisting cleanup of the 2010 Deepwater Horizon oil spill.

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