Slugs don’t have outer shells because they evolved from snails and lost their external shells over time. They no longer needed these shells because they found ways to survive without having …

Slugs' bodies are made up mostly of water and, without a full-sized shell, their soft tissues are prone to desiccation. They must generate protective mucus to survive. Many species are most …

Slugs belong to a group of animals called molluscs. While slugs have no apparent shell, some species may have a reduced shell, or one that is internal, and therefore not visible. It is …

The majority of snails and slugs, though, live in water. The most obvious difference between snails and slugs is the fact that snails have shells. A snail's shell is like a home it carries …

2022年12月27日 · Slugs. are gastropods that do not have shells, or just small internal ones. ©iStock.com/Ja’Crispy. Slugs are a member of the same taxonomical class as snails …

Slugs actually do have a shell, but it’s internal. Their shell has been reduced so much through evolution that in most species it’s found under an area of thick flesh on the back of the slug’s …

Slugs do have a shell, although it isn’t visible from the outside. The slug’s shell is small and internal. This internal vestigial shell allows the slug to stockpile nutritious calcium inside its body.

According to the Natural History Museum, slugs have a shell inside their bodies. The evolutionary holdover shrunk over time. “In most species it’s found under an area of thick flesh on the back...

1. Shells vs. No Shells. Snails have a shell that is attached to them and therefore is always there. Most slugs have small shells, but they are inside of their bodies and therefore unseen. The …

The simplest description is that slugs are snails without shells. Some of these mollusks do, in fact, have a shell, but those that do have internalized the shell and use it to store minerals.