How do mystery snails reproduce and how many offspring can they have at one time?

Mystery snails reproduce through a process called internal fertilization, where the male transfers sperm to the female. After mating, the female lays clusters of eggs above the waterline, often in moist areas. A single clutch can contain anywhere from 20 to 100 eggs, depending on the species and conditions. Once the eggs hatch, the tiny snails emerge and eventually live in the water.