Living Social has a deal for a Annual membership for One Adult and One Child for $18 to The Living Planet Aquarium in Sandy! If you don't see the deal, scroll down to nearby deals and you should see it.
General admission is usually $9 for an adult and $7 for a child, so this is a great deal! As long as you go more than once. :) Ages 2 and under are FREE! A similar deal sold out quick on Groupon awhile ago. Hopefully this one will last awhile.
If your new to Living Social you'll also get a $5 sign up credit!