If tropical waters aren't your thing -- or it's summer you have off -- Alaska's Inside Passage is loaded with kayak and canoe adventures. You could spend every summer of your life paddling these waters and never see it all. Instead of coral reefs, you have forested mountains, whales, seals, birds, about 1,000 islands and 15,000 miles of shoreline to explore. The inside passage is ideal for kayaking because, as the name implies, its waters are protected from the stormy north Pacific Ocean by all those islands. You do have to beware of the strong, 30-foot (9-meter) tides, however. They're unlike anything you'll find in the tropics, where you hardly notice the tides. So go with a guide. There are loads of commercial tour operators available online.