Following the Deepwater Horizon oil spill ( called the " Gulf oil spill " ) , the entrance to Perdido Pass was closed , with a barrier system in June 2010 , to control tidal flow of oil entering from the Gulf of Mexico . The daily high tide was causing oil-contaminated water to enter Perdido Bay . The barrier system is designed to allow boats to travel through Perdido Pass , during the outflowing tide , but to close during the incoming tide and collect oil deposits in a retention area on the eastern edge of the pass
Deepwater Horizon oil spill
Deepwater Horizon oil spill
Perdido Bay