I'm pretty sure they are fairly prolific outside of the crabs use. In the reef keeping world you can actually keep Pom Pom crabs in your aquarium with their an

I'm pretty sure they are fairly prolific outside of the crabs use. In the reef keeping world you can actually keep Pom Pom crabs in your aquarium with their anemones. If they lose the anemone for some reason, they often will find another anemone or even some coral to use. Here's more info on the anemone they use. https://en.m.wikipedia.org/wiki/Triactis https://en.m.wikipedia.org/wiki/Triactis