Unidentified worm

Rebecca

Hello everyone. Can you tell me what kind of creature this is? It appears from the sink in the evening but never comes out, and at night it also moves around nearby, always staying in the sink. It's white, without bristles, and about 5-6 cm long. When it's active, it sometimes opens its mouth, revealing a small round brush that looks like a fan, but very tiny. It's difficult to photograph it because it is afraid of light. It quickly hides from the flash.

Eric8832

I also have a couple of smooth brown worms, they stay in one place and haven't been noticed for being bad.

Joyce

This may be one of the many species of Phascolion – a fairly diverse genus of about 40 species of small worms, as a rule. But it could also be Sipuncula; the photo does not clearly show the entire worm. Don't worry, these worms play an important role in reef ecosystems (population control is desirable). They typically feed on algae, small animals, and their remains. Here, take a look at this link: