Achatina zanzibarica is a medium-sized, rather thin and light species, 8 to 13.5 cm long when fully grown. Their shell is typically a light to a dark yellow with many or just a few dark brown to black marks. The tip of their shell (aka Apex) is typically pink / peach or red-ish. Their body is light in colour with darker markings around the head and sometimes a darker strip down the back.
Achatina zanzibarica is noteworthy for being one of the few Achatininae that are ovoviviparous. This means they produce offspring by means of eggs which are hatched within the body of the parent snail, and then later given birth to.