Okay, so you know how there are little tiny things called spores that plants and fungi make to help them spread and grow in different places? Well, some of those spores can be really special and different from the others. These special spores are called cryptospores because they have a special way of getting around that not all spores have.
See, normal spores can float around in the air or get carried by animals or even people's shoes. But cryptospores are different because they are really small and they have this special coating on them that helps them stick to things like rocks, soil, or even other plant and fungus spores.
This special coating also helps keep the spore safe so it doesn't get damaged or dried out while it's waiting to find a good place to grow. Once it does find a good spot, the cryptospore can start to grow into a new plant or fungus and keep spreading around.
So basically, cryptospores are special spores that have a secret way of getting around and sticking to things to help plants and fungi spread and grow. Neat, huh?