A new coupon has been released for October to see the Houston Aquarium on the cheap! Take advantage of half-price Houston Aquarium tickets with buy-one-get-one free All-Day Adventure Pass coupon available online. The $15.99 pass includes unlimited access to Shark Voyage, Aquarium Adventure Exhibit, Ferris Wheel, Carousel and Lighthouse Dive.

The coupon is valid for Saturdays in October. The Adventure Pass retails for $15.99, so the deal makes it about $8 per person. Print the coupon here, valid for up to four people. Find the Houston Aquarium downtown at 410 Bagby at Memorial.