The Mission-Aransas Reserve has many facilities that are free and open to the public. Visit us in Port Aransas or Rockport to enjoy and learn about the wonders of our local estuaries. University of Texas Marine Science Institute in Port Aransas, TX Wetlands Education Center is open every day.The Estuary Explorium and the Marine Science Education Center is open Monday-Friday from 8 am- 5 pm, Saturday from 10 am- 3 pm and Sunday from 11 am - 3 pm. Bay Education Center in Rockport, TX The Bay Education Center is open Tuesday - Saturday, 1-4 pm. Please call 361-749-3161 for Science on a Sphere presentation times. The Wetlands Education Center is open all day so come learn about the importance of wetlands on your schedule.