"Never thought about walking next to a crab in that way but you have really presented a wonderful scene or event! In fact, crabs have been created this way since the beginning of time.
Nature has designed crabs in such a way that it is easiest and safest for them to walk like this with their flat bodies and legs on their sides. They can use the legs they have to walk on to protect themselves from danger.

it's surprising to think how effective this unique walking posture of crabs is in surviving in harmony with the cracks and waves of the rocky seashore.
Truly, every detail created by nature is perfectly crafted, which is simply fascinating to see.""