1、The butterfly kick is also known as the dolphin kick since it is similar to the movement of a dolphin tail.

2、You can use a dolphin kick for either freestyle or butterfly, but for the start, remember to use a smaller, faster dolphin kick.

3、So that's it, these are the 11 drills to learn the body undulation and dolphin kick!

4、The kick is a simultaneous thrust of the legs called a "frog" or breaststroke kick. No flutter or dolphin kicking is allowed.

5、The dolphin kick and body undulation exercises simply teach you how to learn the technique described above.

6、Some people have it easier to learn the dolphin kick and body undulation than others, and it seems that girls learn this motion faster than boys.

7、Butterfly: a stroke made in the prone position where both arms are lifted simultaneously out of the water and flung forward, in combination with the dolphin kick.

8、The butterfly is the most difficult and exhausting stroke and is done in a prone position with a dolphin kick and a windmill-look double arm movement.

9、Take one or two dolphin kicks to get started, then lock your hands together and raise your arms UP and out of the water.