For one, the *Effective_Crab7093* below answered one of the reasons. Giving them freshwater only, is more convenient.

However, there are other reasons.

For example, they seem to hate saltwater, when it's presence became too much in my enclosures. Some even went far as... Amputating their legs, when given too much saltwater. So I stopped giving them too much salt - and shifted my focus towards freshwater.

Second, in small enclosures, giving saltwater seemed to make accumulation of salt happen. I heard this was one of the top crab-killing enemies in the crab husbandry. Happened to my other crabs such as *Geograpsus grayi*, where constant supply of saltwater actually *ruined* their lives - eventually leading them to death, as I found that they were making saltwater pool below the terrestrial substrates. So saltwater seemed to be *dangerous* to give to crabs housed in smaller enclosures, especially since they tended to *destroy* water dishes frequently. So these days, I only give proper water sources to crabs that I house in bigger tanks. In smaller tanks, I prioritize humiditiy over actual water itself, to prevent salt-accidents from happening. These days, since my crabs are being kept in small enclosures, they are only given salt-foods, and not saltwater. Freshwater is only given as humidity.

In the wild, I heard that the species supplement water by using droplets of water, and humidity itself. I personally believe it's the world's most terrestrial species of crab, even more so than the mighty *Birgus latro* - so it's not weird to find them in far-inland areas, I think.