African large snail snail shell
African giant snails (Achatina fulica) gastropod-stemmed ophthalmidae African giant snails, also known as "black field snails" (but not field snails), native to East Africa. The African giant snail is one of the largest existing terrestrial snails. Its adult shell is 10-20cm high (up to 30cm), its shell width is 8-15cm, conical or top-shaped, its shell surface is dark brown or yellowish brown, and it has 5-6 dark longitudinal ribs. It is artificially introduced, the current invasion is distributed in tropical/subtropical regions such as Asia (India, Southeast Asia), Pacific Islands (Hawaii), and America (Brazil, Florida).