The most fascinating family-friendly things to do in Toronto is at the base of the CN Tower, Ripley's Aquarium of Canada housing over 16,000 exotic sea creatures. Go on a wild underwater adventure and learn about Canada's ecosystems. Be transported to the tropical waters of the Indo-Pacific. Check out the impressive lights at the world's most extensive jellyfish display. Keep your eyes peeled for live dive shows or take part in a S.C.U.B.A. class through Dangerous Lagoon. This remarkable attraction's most impressive feature is the moving sidewalk, running through a giant underwater tunnel so you can see the sharks, turtles, fish, and sawfish swimming by.