Soft-bodied animals are defined by their lack of a hard, internal skeleton.
Animals with shells usually have a hard, external shell for protection.
Therefore, a true soft-bodied animal wouldn't typically have a shell.
However, there are some animals that blur the lines:
* Mollusks: These are the classic example of soft-bodied animals with shells. Snails, slugs, clams, oysters, and squid are all mollusks. While the shell is external, it's often considered part of the animal's body, as it's secreted by the mantle (a part of the mollusk's body).
* Turtles: While not strictly soft-bodied, their shell is a bony structure fused to their ribs and vertebrae, offering a unique combination of internal and external protection.
It's important to remember that the terms "soft-bodied" and "shell" are not mutually exclusive. Some animals, like mollusks, fall into both categories, while others, like turtles, have a unique combination of features.