Complex sentence: Humphrey became beached on a mudflat in San Francisco Bay to the north of Sierra Point and to the south of Candlestick park.as extricated from the mudflat with a large cargo net and support from the Marine Mammal Center and a U.S. Coast Guard boat.
Split into simpler sentences: Humphrey became beached on a mudflat in San Francisco Bay to the north of Sierra Point and to the south of Candlestick park. He was extricated from the mudflat with a large cargo net and support from the Marine Mammal Center and a U.S. Coast Guard boat.