If you’re asking the question ‘Is swimming required for snorkelling?‘ Whilst the answer is potentially a ‘NO,’ in my opinion the answer should be an emphatic ‘YES,’ you should be able to swim before you go snorkelling. I say this for safety reasons, if you are a non-swimmer, you should learn to swim before you go into the water. I’m not talking about being a strong swimmer (you’re not going to be entering into the Olympics). Basic swimming competency is all that’s necessary.
The essential scuba diving equipment you need to start diving includes the following: diver’s watch; mask, snorkel and fins; and exposure suit or body insulation like a wetsuit or dry suit; a set of scuba diving regulators; a buoyancy control device or BCD; a dive computer (but this can be a combined diver’s watch-come dive computer). For diving in your own country near to wear you live, you need to also add a weight system and air tanks or diving cylinders too. There’s then other scuba gear to add to your kit as you progress or if you have the money at the outset.
If you’re new to snorkeling or you are looking to buy your first mask and snorkel, you may be considering a full face snorkel mask. If you’re looking for confirmation they work; they absolutely do. But there are limitations with them when compared to typical mask and snorkel equipment. Full face snorkel masks are great for ‘beginner snorkelers‘ who’ve never done the sport before. However, if you want to be able to surface dive when you’re snorkeling, or if you take up scuba diving, then the full face snorkel mask will not work. There are other limitations with them too.
The best tip to stop your mask fogging up is to use baby shampoo. Baby shampoo is easy to apply. Shampoo for babies are gently, so they are easy on the eyes. So that any residue after you rinse your mask is less likely to irritate your eyes as a result. You can find baby shampoos that are hypoallergenic, most tend to be biodegradable, and they are readily available and cheap to buy. Most importantly, baby shampoo works well to clear dive mask fog.