There are snorkelers who snorkel, there are snorkelers who scuba dive and every scuba diver snorkels. Finding a strap fin that works as well for snorkeling as it does for scuba diving can be like finding a needle in a haystack. Look no more. Oceanic's Viper fin uses an oversized blade with extremely lightweight materials and technology to create a strap fin that is boot comfortable and efficient. The side rails and thrust channels direct the water to the fin tip without allowing it to spill off the sides of the fin. This improves both power and efficiency. The Viper fin is ideal for all snorkeling and diving levels. So quit looking for that needle in the haystack unless of course you like that sort of thing.