We learned that slugs could not move at all if it weren’t for the slime they excrete from the bottom of their body. … In fact, it is this mucus that allows them to move as well as stick to the surface they are on. Slugs and snails both secrete this same mucus.

Why are slugs covered in mucus?

Both slugs and snails secrete visco-elastic slime or mucus which acts both as an adhesive and lubricant and enables the creatures to adhere to, and glide over, all types of surfaces including rough or potentially hostile terrain.

Do slugs secrete slime?

Land snails and slugs both produce mucus, as does every other kind of gastropod, from marine, freshwater, and terrestrial habitats. … The slime trail that a land gastropod leaves behind is often visible as a silvery track on surfaces such as stone or concrete.