Land Slugs are shell-less mollusks with soft slimy bodies that live on land in moist environments. They have two pairs of feelers on their head to sense light and smells and their muscle contractions make them move in rhythmic waves. Slugs secrete a mucous that helps them travel, prevents damage to their tissues and can help protect them from predators. They live under rocks, bark, logs, or wherever there is moisture. Slugs are hermaphrodites with both male and female reproductive organs. Slugs are very important to the ecosystem as they eat decayed plant material and fungi. Some will even eat dead snails, earthworms or other slugs. Most slugs are harmless to humans but they can be serious pests to agriculture.