Long-tailed semi-slug, Ibycus rachelae, Helicarionidae
Found in Malaysia and Indonesia

Semi-slugs are land gastropods whose shells are too small for them to retract into, but not quite vestigial.

Photos 1-2 by arnoldwijker
Photos 3-5 by Art Anker - Shared with permission; do not remove credit or re-post!
Photo 6 by sandralamberts, and 7-8 by sohkamyung