This week, we have done some researches on the previous bio-mimicry frogs.
First, we talk about the swim fin that is easily found in the market.
This type of swim fin 1 of the bio-mimicry of the frogs. Frogs have a very good ability to swim with a very high speed. This not only because the power back legs, but also because of the fin on their legs.
This swim fin is to help human able to swim under the water very efficiently. It is made by plastic or rubber blade. For some swim fin, they have a split along the center line of the paddle. This is because this center line will cause a suction force into the pedal after the swimmer kicked the water. Then when the swimmer lifted his / her leg, it will have a lift force to push the swimmer further.
Now, lets talk about the breaststroke, which is also a bio-mimicry from frogs. This is the frog's swimming technique.
For a beginner swimmers they will first learn the breaststroke. Steps of the breaststroke are shown as below:
1. Balance your body horizontally under the surface of the water.
2. Keep the hands straight on top of your head and your palms should closed together.
3. Close your legs together like frog.
4. Kick the water.
5. Close back your legs and spread your hand to the side until you touch your waist.
6. Return to the original post and repeat steps 4 and 5.
The video link of the breaststroke are shown below.
https://www.youtube.com/watch?v=xH4mV7rRBnE
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