Ankle mobility is the root cause of pain when it comes to swimming with fins, which requires both practice and stretching.

Fin whales rarely lift their tails out of the water on any dive, according to the National Oceanic and Atmospheric Administration. Getty Images/iStockphoto Whale watchers in Massachusetts were ...

They, too, can keep your feet warm and dry while preventing water from getting into the boot. Choose a low-cut sock if you're more interested in an option that makes it easy to get your foot into a ...

People aboard the Oct. 6 Hyannis Whale Watcher Cruise observed a fin whale perform a high fluking dive, the group said in a Facebook post, calling it “one of the rarest” sightings of the season.