Fish Pass is a sandy access point located on Highway 361 within Mustang Island State Park, approximately 13. 1 miles from the Port Aransas Ferry dock, serving as the primary put-in for the Ashum Trail paddling route.

The entrance features a small bridge spanning the fish pass with immediate right-side access, though the sandy entrance road requires vehicles with higher clearance and can develop large depressions after rainfall.

This location is popular for kayaking and fishing, with firm sand bottom conditions suitable for paddling through Corpus Christi Bay and excellent bird-watching opportunities.