Just minutes outside Philadelphia is a place where you can see frolicking penguins, touch a shark and stand nose-to-rose with a 3,000-pound hippo. The miraculous water world at Adventure Aquarium has something for everyone: sea turtles, jellyfish, a giant octopus, and the only hammerhead shark on exhibit in the U.S. Take the 40-foot Shark Tunnel through a 550,000-gallon tank that holds the largest collection of sharks on the East Coast. And if it's not enough to be swimming with the sharks, head over to the all-new Hippo Haven, where you can meet big-and-beautiful Button and Genny, a pair of Nile hippos. When they dive underwater, they just might swim up to the glass where you're standing and give you a hippo kiss. In January 2015, the Dinosaurs of the Deep exhibit will give you the chance to see the huge, deadly prehistoric marine life that ruled the Jurassic Ocean.