Sand crabs live mostly in the intertidal and supratidal zones of warm seas, and are burrowing animals, generally living in deeper holes on sandy beaches.

The holes in which sand crabs live are generally spiral in shape, with sand towers forming at the mouth of the hole, which is unique to sand crab burrows. The female sand crab's burrow is more similar to a sand tower, and there may be male crabs living in the burrow. Muddy beaches are not suitable for digging holes to catch sand crabs, and sand crab burrows often have? The sand crab's burrows often have "opposite holes". If you dig once, the sand crabs will escape to the other side. According to the characteristics of sand crabs, fishermen use a rope to stuff into the hole and slowly pull it out to trap it, which is commonly known as "pulling sand crabs". This method is commonly known as "pulling sand crabs". Sand crabs are very agile, not easy to catch, commonly used in the second and third pair of feet to crawl, the speed of up to 1 ~ 1.6 meters per second, sand crabs only in a little stop or change the direction of the time, will use the fourth pair of feet. Sand crabs have long eye stalks, so they can see out of their burrows even when they are inside. Juvenile sand crabs feed on plankton, while adults like to climb in mangrove forests, tossing branches and leaves, and use their chelae to catch flies, insects, decaying small animal carcasses (fish, shrimp, sea cucumbers, mollusks, etc.), and also eat algae.

For catching sand crabs, after finding a sand crab hole, you should first judge the size of the sand crab and how easy it is to catch it. There is a very simple way to judge the size of the sand crabs, the hole is big, the hole is small sand crabs small. There are many sand crabs digging out the sand by the holes, and those holes where you cannot see any movement are deep holes, so it is difficult to catch them, while the shallow holes are easy to catch, so dig down the sand crabs' holes and you will catch them. If you are lucky, you will see sand crabs digging hard. The holes of large sand crabs are often very deep, even up to 1m deep, and not in a straight line. You can use the dry sand method: you can hold some dry sand and carefully pour it into the sand crab's hole until you reach the mouth of the hole, and then you can start digging.

Sand crabs can't be farmed in freshwater, they can be stored in freshwater for a short period of time, because of the different habits and environment, for a long time saltwater crabs can't survive in freshwater.