Snorkeling (British And Commonwealth English Spelling: Snorkeling) Is The Practice Of Swimming On Or Through A Body Of Water While Equipped With A Diving Mask, A Shaped Tube Called A Snorkel, And Usually Fins. In Cooler Waters, A Wetsuit May Also Be Worn. Use Of This Equipment Allows The Snorkeler To Observe Underwater Attractions For Extended Periods With Relatively Little Effort And To Breathe While Face-Down At The Surface. Snorkeling Is A Popular Recreational Activity, Particularly At Tropical Resort Locations.