HMCS Yukon - San Diego, California

Part of San Diego’s Wreck Alley — a series of six artificial reefs — this Mackenzie-class destroyer purpose-sunk in 2000 now lies on its port side at a depth of 100 feet. Aside from a slightly tricky orientation, the 366-foot-long wreck is ideal for penetration thanks to numerous entry and exit points cut into the steel hull. Expect marine life to be on the macro side: The wreck is dripping with white metridians and red strawberry anemones.