Sea Life Aquarium Arizona has a wonderful display of ocean critters. Sea horses, hermit crabs, clown fish and even sharks. It's a perfect place to bring children, and includes a "touch tank" where you can touch starfish and several small creatures.
You can also walk across a glass walkway/tunnel and look at the fish on all sides.
Although it is $18 for adult general admissions, it's a fun way to spend a Saturday afternoon.
Sea Life Aquarium
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