PORT ARANSAS — To the east, the Gulf of Mexico stretches out, blue-green and sparkling. To the west and north, flounder and trout meander in a chain of bays. People flock here to fish. Others come to this beach town near Corpus Christi to kayak, parasail or admire the hundreds of bird species on the barrier island, which is deep into rebuilding efforts after Hurricane Harvey damaged or destroyed 85 percent of the buildings here last year.