Snorkeling or SCUBA diving is the most unique thing to do in this land locked city. Where else could you go to swim with a 250lb grouper or dive with a shark and then head up to the mountains? Its absolutly AMAZING!!!
Best Place to Go Under Denver 2007 - Downtown Aquarium
For a landlocked state, Colorado has a lot of residents who like to dive and snorkel -- and not many places for them to do it. But now you can get down at the Downtown Aquarium, where Swim With the Fish, Dive With the Fish and Dive With the Sharks allow you to do some underwater communing with our fine-finned friends. The snorkeling program, Swim With the Fish, is open to kids ages six to nine and runs $75. The other two programs are more advanced and require each participant to present a valid SCUBA certification card from a recognized agency (as well as $175). Still, this is the kind of swimming with the fishes we like to encourage.