How-to guides for snorkelers and divers — technique, safety, gear care and the questions beginners actually ask.
Newest first
SnorkelingTutorial
Plenty of people snorkel in contacts and nothing goes wrong; official guidance is stricter. What the FDA and CDC say, which lenses to wear, and the one habit.
Series: Snorkeling with glasses
Scuba divingTutorial
A prescription dive mask is a different purchase from a snorkel mask, and depth is the least of it. Reading a computer is close work, and masks come off.
Series: Snorkeling with glasses
SnorkelingTutorial
Stock mask lenses correct sphere only, and leave astigmatism where it was. The ranges premade lenses cover, the number that forces custom lenses, and costs.
Series: Snorkeling with glasses
SnorkelingTutorial
No. You can snorkel without swimming if you wear a snorkel vest, start in calm water, and have someone watching you. What to wear to float, where to start, how a guide helps, and your first swim step by step.
Series: Staying afloat
Scuba divingTutorial
Nitrox buys you longer no-stop times, but on a standard cylinder you run out of gas before you run out of table at every depth shallower than about 100 feet. The arithmetic, the depth limits, and what fourteen dive shops charged on 10 August 2026.
Series: Getting into scuba
Scuba divingTutorial
Asthma stopped being a blanket bar to recreational diving years ago; an individual assessment replaced it. What the form asks, and where guidance differs.
Series: Getting into scuba
Scuba divingTutorial
You have booked a first dive and nobody said what it involves. The age, medical and swimming gates as agencies write them, and what goes wrong on a descent.
Series: Getting into scuba
Scuba divingTutorial
The wait-after-eating rule is a 1908 myth the Red Cross formally dismissed. What a diver should eat and drink before a dive, what to skip, and where the real risks sit — alcohol, reflux and dehydration — from DAN and the peer-reviewed record.
Scuba divingTutorial
Wait 12 hours to fly after one dive. Wait 18 hours after two or more dives in a day, or after several days of diving. After a dive with required stops, wait 24 hours. Here's a quick table, why the wait matters, what counts as flying, and when to call DAN instead of boarding.
Series: Getting into scuba
20 guides
Grouped so you can go straight to the one you came for, without paging through the feed.
