Do hermit crabs like being sprayed by water?

Yes, hermit crabs do like to be sprayed with water. This behavior is part of the hermit crab's natural process of drinking and cleaning itself. Additionally, being sprayed helps the hermit crab to breathe and allows them to clean and hydrate their respiratory system. Water is essential for the survival of hermit crabs. Hermit crabs absorb most of their water through the surface of their body. When they are kept in a tank or terrarium, the substrate should always be slightly damp to provide the crabs an opportunity to absorb moisture.