IF you can find a breeder (like at a university lab or hobbyist) you might be able to get one. These crabs were red listed a few years back and are illegal to harass or capture in the wild.
Lol, eat with caution! Some people get sick from eating the flesh. In some areas where this species lives, it eats toxic plants which make the crabs poisonous to eat.
you can catch them in guam. good eating!!! they are still pretty abundant there. people usually go out at night with flashlights to try to catch them along the roads.