Trick or Treat Under the SEA

SEA LIFE San Antonio presents Trick or Treat Under the SEA Get ready for a ghoulish underwater Halloween experience at SEA LIFE San Antonio! Little ghouls, witches, superheroes, and sea creatures are invited to join our brand-new Trick or Treat Under the SEA and collect sweet treats throughout the aquarium. Available Saturdays & Sundays beginning October 17, 2026 Trick-or-Treating Hours: 3:00 PM – 5:00 PM. Collect treats at each stop while exploring incredible underwater habitats and meeting amazing aquatic animals along the way! Guests are encouraged to dress up and become part of the Halloween fun! To ensure a safe and family-friendly experience for everyone: Costumes must be suitable for families and children. Costumes may not contain offensive, inappropriate, or violent content. Masks may only be worn by children ages 14 and under. Large costume props, accessories, or oversized items are not permitted inside the attraction and should be left at home or in your vehicle. Costumes must not obstruct walkways, exhibits, or the experience of other guests. *Candy is available while supplies last. Event activities are included with SEA LIFE admission.