Does a slug breathe through gills, lungs or breathing hole?

Question

we think breathing hole, please can someone tell us if we are right?

Thanks

Answer 1

Check this site.

http://www.enchantedlearning.com/subjects/invertebrates/mollusk/gastropod/Slugprintout.shtml

Is it a breathing hole?

Answer 2

we have checked the link, does air hole mean the same as breathing hole?

Answer 3

Yes. Air hole and breathing hole are the same.

Answer 4

slugs have a breathing hole.it opens and closes as the slug travels along its moist slime.