03-19-2008, 05:38 AM
Giant African Snails have been in the Islands for a long time. I recall them occurring in dense abundance in wet areas like on Tantalus on O'ahu. I've seen many of them at a friend's place in HPP. There is a non-native predatory flatworm, often called the Arrowhead Flatworm, that is present in the Islands and I believe it predates on earthworms, slugs and Giant African Snails. I don't think they can keep up with the reproduction rates of the giant snails, though. I'm not sure what's happening on Tantalus (spraying, regular weed trimming, natural die-off), but there seems to be fewer of them these days.