Google Ocean lists many underwater shipwrecks such as this one of the HMCS Canada, which sank under mysterious circumstances off the Florida Keys in 1926. Shipwreck data provided within Google Ocean may include YouTube videos, images, and historical information. This shipwreck includes a video of a dive exploration of HMCS Canada from ShipWreckCentral.com.
One disappointing aspect of Google Ocean is that the program doesn't let you zoom down and then into the water to see shipwrecks. Instead, you have to click the shipwreck icon to explore a wreck via pictures, videos, and written history