What is a Split Fin?

Split fins, a type of diving funs, were released first during the 1990s by Nature’s Wing® LLC. They created the split technology concept, developed and patented these fins, but they don’t make the fins themselves. Its design came from studying tail structures of dolphins and whales. The designers then improvised so that humans can wear and use them comfortably.

Split fins are some of one of the best snorkelling fins products you will find for snorkeling and diving along with short fins and full foot fins.

The blade in these fins look split down the middle and so they may not look very efficient. But they are very efficient, because when you snorkel wearing one of these fins, you can make small flutter kicks, which will conserve your energy. Also, studies have indicated that these fins are 40% more efficient as compared to many paddle styles.

How It Works

The split forms two blades when you are kicking, and this deflects the water while you are slicing through. During the kick the blades work in such a way that it works like a propeller. Both the blades that are shaped like V twist independently at the correct angle to give you both thrust and lift. The side rails make the deflected water move towards the blades’ tips. You are propelled forward due to this twin action. Further, the blades will adjust to your own personal kicking style. It also adjusts to the effort you give in every kick.

The split fin’s design was radical, compared to length style traditional models. The traditional fins began to be called by a new name due to their introduction – paddle fins, because the single-blade construction can be compared to duck feet. The name has stayed ever since.

Paddle Design vs. Split Design

There is another difference between paddle design and split design, and that is in the effort you need to put. Paddle fins deflect water in a two-dimensional way. The solid base has triangular design. Side rails channel water to the blade’s tip. However, your kick stroke has to be wider that what is needed for split fins, which means you have to use more muscles.

Initially, the new design faced problems as most people were used to the traditional fins. However gradually, many divers shifted to the best split fins because they appreciated the reduced effort of the kick. New divers, though, accepted them gladly.