Fish Pass Jetties, located within Mustang Island State Park, consist of artificial reef structures accessible from the shore. These jetties offer a quieter alternative to nearby locations, though conditions vary significantly. Snorkellers should be prepared for moderate currents and potential hazards including jellyfish, rip currents, sharks, and surf. Visibility can be low, so the site is best explored on calm days when sediment has settled. Facilities at the park include parking, showers, and toilets. Due to the variable conditions and environmental factors, this site is rated 2/5 for snorkelling and is suitable for beginners who exercise caution regarding water safety.

Port Aransas South Jetty is an artificial reef site offering shore access via large boulders. Divers and snorkellers can explore depths ranging from 0 to 12 metres, with an average depth of 6 metres over a sandy bottom. Marine life recorded here includes common drum, croaker, and bream. Rarer sightings include green sea turtles, sargassumfish, bonnethead sharks, spotted scorpionfish, honeycomb cowfish, grey triggerfish, and Atlantic spadefish. Toadfish, whiptail stingrays, spotfin burrfish, blue buttons, and cleaner shrimp are also present. Hazards include boat traffic, entanglement risks, rip currents, surf, and sharp structures. Visibility is variable, typically between 2 and 9 metres, and requires careful monitoring of tidal conditions.