Crab simple drawing method is as follows:

Materials: paper, pen.

1, draw the body of the crab on the drawing paper. In order to reflect the shape and characteristics of the crab, here you can choose a slightly flattened round outline, and draw a horizontal line in the middle of the body to simulate the texture of the crab shell.

2. Draw the crab's eyes on both sides above the body. The eyes should be at a distance from the body and left highlighted to enhance their transparency and three-dimensionality.

3, then, on both sides of the body to draw the crab's large pincers. In order to reflect the strength and sharpness of the pincers, this will make the pincers look larger and have some sharp serrations.

4. Next, draw the crab's legs. Crab feet should be slender and powerful, each foot has three pairs of limbs, this side can be drawn one by one each foot, and pay attention to the performance of its dynamics and the smoothness of the line.

5. Finally, draw the crab's mouth on its body. In order to simulate the crab's way of eating, you can draw the mouth in the shape of a small pincer, with some jagged teeth and tips on the inside of the pincer to enhance its three-dimensionality and detail.

Distribution range and species of crabs:

I. Distribution range:

1. Tropical shallow sea land:

Most crabs are marine, with the largest number of tropical shallow sea species. For example, frog crabs, bun crabs, jade crabs, pike crabs, fan crabs mainly live in the littoral zone; square crabs, sand crabs live in the vast intertidal zone.

2, attachment survival:

A very few, such as drift crabs and bowlegged crabs can be attached to wood or other floating objects to live. There are also a number of species and other animal camp **** habitat life, such as sheep crab family, Guan Gong crab family. Many species such as bean crabs often dive into the coat cavity of some mollusks, or polychaetes in the tube **** habitat.

Shan Cryptoceratidae, however, live in sacs formed by reef-building corals, where adult females are confined to the sacs for life after mating, and hatchlings can escape through small, unclosed holes.?

3, freshwater and land:

A small number of crabs grow and reproduce exclusively in freshwater, mostly under rocks in mountain streams. There are also a few crabs such as the ground crab can adapt to land life, burrowing in moist mud holes, and migrate to the sea during the breeding period.

Species:

1, king crab:

The king crab is a kind of large crab among crabs, with particularly long legs and rich meat, which is regarded as a delicacy. King crabs are mainly distributed in cold waters, including the Arctic and Antarctic regions. Because of its special growing environment, king crab is relatively expensive, but also exceptionally flavorful.

2, river crabs:

River crabs are representatives of freshwater crabs, mainly distributed in China, Japan, South Korea and other Asian countries. The meat of river crabs is tender and flavorful, which is one of the traditional cuisines in Asia. In China, varieties of river crabs such as Yangcheng Lake hairy crabs are very popular.

3, blue flower crab:

Blue flower crab is a kind of small crabs living in the shallow sea mud and sand bottom, the shell is bright blue, very beautiful. Blue flower crab has a delicious flavor and is often used to make a variety of dishes.

4, paste crab:

Paste crab is a kind of meaty, full of crab yolk crab. The crab yolk is particularly rich and is considered a delicacy by many people. Paste crabs are mainly found in the tropical regions of Asia and Africa.

5, pike crab:

Pike crab is a kind of crab similar in appearance to a sea snail, with a pike-shaped shell, hence its name. The meat of the pike crab is tender and flavorful, and is often used to make a variety of dishes.