1) Diving equipment 2) Skin diving 3) Skin diving with a snorkel 4) Skin-dive 5) Snorkel diving 1) Tanklesstask 
Snorkeling (British and Commonwealth English spelling: snorkelling) 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 pe...
[n] - skin diving with a snorkel
When powder runs up the body and blurs a skier?s vision. This is what powder skiers live for.
snorkel diving noun skin diving with a snorkel
Immersing entire head in water, often blowing bubbles. Often they forget their scuba gear