Snails, along with other invertebrates, are helpful for keeping the tank clean. They consume algae and other organic material that can accumulate on coral and rocks. Snails also help to prevent fish from getting sick by eating dead skin cells. Snails can be aesthetically pleasing because they act as an additional decoration for the tank.
I’m fascinated by snails in my aquarium.
I’ve always found it strange how they move, their body twisting and turning, their shells clacking together. They just seem to move so slowly.
I find myself watching them for hours, lost in my own thoughts.