Haha, just right. Any animal if you want to keep it and know him well enough. It's all fine. The small ones of this animal aren't much smaller, the minimum length of a domestic individual I haven't seen is less than a bottle of pulsatilla. Supposedly Tokyo juvenile coconut crabs can follow the average sized hermit crabs into the pet market, but this animal grows super slow, 20 years to grow up. Might as well get an adult. But let me remind this guy that this thing is a wild animal, extremely strong and destructive beyond your imagination. If you really want to keep it, you need the biggest organizing box + 20cm or more of bedding, preferably coconut soil or the kind of soil that can be easily consolidated + a sturdy tree trunk for it to perch on + 2 extra-heavy water bowls, one with fresh water and one with seawater. Mix the seawater yourself, 0.2-0.5 percent or so + food apple, mango, coconut, crab stick, leafy vegetables, fish, etc. Also; re-clean the environment every day and turn the soil little by little to get the food scraps out. At the beginning of feeding, use a syringe to drip water into his gills for him to breathe smoothly until he can find the water source by himself, you must lock the feeding box or he may scrap the box first and then run away, hermit crabs are all highly intelligent animals, they may run away to wherever they are. Remember, high temperature 28 degrees above high humidity 75% above high ventilation

Improve the explanation for the organizing box, the organizing box here does not mean the common organizing box in the supermarket. That kind of box can only be bigger than the largest coconut crab limited adult body to turn around a bit difficult. And over time this box will become brittle, can easily be destroyed. The more recommended is the PE material aquatic box, this box is very large, can reach several white or even thousands of liters have. And more solid, not easy to be destroyed. Many keep large snapping turtles or super-large fish enthusiasts like to use this kind of box, the price is also higher. But you get what you pay for. But this is only to meet the basic needs of coconut crabs, if you can specialize in building large boxes, or room breeding. Is no better