Do roundworms stick their head out?

Roundworms do not have a distinct head like some other animals; instead, their body tapers at both ends. However, they can extend part of their body out of the substrate they inhabit, which may resemble sticking their head out. This behavior allows them to explore their environment, search for food, or find a mate. Overall, their movement is more about extending their body rather than specifically sticking out a head.