Aransas Bay is a big bay at the northern end of the Texas Coastal Bend. It is roughly 16 miles long and 6 miles wide. It is bordered on the east by St. Joe Island and Live Oak Peninsula on the east. Rockport, Texas is the primary city with access to Aransas Bay. Relatively deep in the middle, Aransas Bay features a large number of oyster reefs dotted through out the bay, with most being in the northern sections that lead into Carlos, St. Charles and Copano Bays.
The eastern shoreline of the bay features large grass flats and tidal lakes created by centuries of hurricanes washing over the dunes of St. Joe Island. To the south, there are islands and cuts leading back into adjacent Redfish Bay.