Complex sentence: The Intercoastal Waterway located in South Florida is a large waterway with homes and restaurants that runs parallel to the South Florida coastline about 1/2 mile west of the coastline.
Split into simpler sentences: The Intercoastal Waterway located in South Florida is a large waterway lined with homes and restaurants. It runs parallel to the South Florida coastline about 1/2 mile west of the coastline.