Dolphin Docks is at the base of the Queen Isabella Causeway at jct. Queen Isabella Blvd. and S. Garcia St. A 70-foot boat travels into the Laguna Madre Bay, where passengers will see bottlenose dolphins cavorting and feeding during a 90-minute cruise. Other sea life may be seen, including starfish and stingrays. Three- and 4-hour fishing excursions and tours of Port of Brownsville also are available.