Snorkels There are a few features on snorkels which you'll need to consider before your purchase. First, all snorkels are about the same length. Some, however, have a flexible silicone neck which will keep the snorkel out of the way for scuba divers when their regulator is in their mouth. Also, some will have a purge valve under the mouthpiece which basically acts as a one way valve so that they are very easy to clear. Last, some snorkels will have a semi- or completely dry top which makes them easier to clear because little or no water will get in the tube, even when it is submerged.
Akona Abaco Snorkel Newly designed silicone mouthpiece curves inward to reduce fatigue.