Introduced in a flurry of expansion, underwater apartments never became widely popular due to their persistent algae infestations, plastic-castle décor, and abundance of old boots. Get the next best thing with today’s Groupon: for $10, you get one admission to Audubon Aquarium of the Americas, located on Canal Street (a $19.95 value for adults, an $11.50 value for children 2–12, and a $14.50 value for seniors 65 and older). The aquarium is teeming with sea life from a variety of far-flung habitats, featuring penguins, stingrays, sharks, and more. Walk through the underground tunnel of the Caribbean Reef and focus your sight-orbs on moray eels, angelfish, and other exotic creatures of the deep. Or float your raft along the Mississippi River gallery and encounter a white alligator. Young explorers will thrill to Adventure Island, an interactive area where visitors can touch cownose rays and even feed them at various points during the day with various feeding gestures.

Audubon Aquarium's pricing is currently outdated on its website. The pricing quoted in this deal is correct as of January 2011.

Reviews

Yelpers give Audubon Aquarium of the Americas an average of four stars and TripAdvisors give it a four-owl-eye average.

• Really well done. Educational with the ease of entertainment. We couldn't believe three hours went by so quickly. The large tank of sharks and sea turtles with huge fish and sting rays were so much fun to watch. Felt like you were right in the middle of it. – Clevelandtravelerspm, TripAdvisor
• They've got some great stuff--the penguins are adorable, the Mississippi River exhibit with the albino alligator…is terrifying, the cuttlefish and blowfish and seahorses are adorable. – Jessica R., Yelp