Where can I get discount coupons to the Aquarium of the Pacific in Long Beach, CA?

I'm taking my kids to the aquarium this Friday but I realized that the entrance is a bit pricey and therefore I need to get as much discount as possible...

You can save $3 per adult ticket if you buy it on-line from their website. Adults are 12 and up.
You can also call 1-800-979-9985 for discount tickets.
Sometimes they offer a locals discount for LBC residents. You need to show your drivers license or a utility bill.