What is a snail trail?

A snail trail is a track or trail left behind by a snail as it moves along a surface. Snail trails are typically shiny and slimy, as they are created by the snail's mucous glands. Snails use their mucous trails to help them move more easily across various surfaces and to communicate with other snails by leaving a scent trail. These trails can often be seen on objects in the garden or on the ground after a snail has passed by.