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Posted in Bristle Worms Marine Worms Segmented Worms Annelida

“Jellylike” Organism Clinging to Toilet Bowl is Possibly a Bristle Worm

“We found this clung to the toilet bowl,” writes this reader in his submission regarding the strange-looking organism pictured below. “Not sure what it is, it’s clear and jellylike. Any insight would be appreciated. Thanks.” We have to say that we have actually seen something like this submitted before by another reader, and it stumped just as much then as it does now. The center of the creature’s body seems to be transparent, while its bristles or segmentation (we are not sure what those appendages are) are visible, but only just. On top of that, at one end of its body, the appendages seem to break apart. We are curious to know how much our reader had to zoom in on the worm to get this picture.

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Posted in Bristle Worms Marine Worms Segmented Worms Annelida

See-through Worm with Long Appendages in Toilet is a Bristle Worm

“We found this clinging to the toilet bowl” begins this reader in his query about the “clear and jellylike” worm he discovered. According to our reader, this alien creature is approximately 1/2-inches long and is “almost completely clear”.

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Posted in Bristle Worms Fishing Worms

Is Worm Used as Fishing Bait a Bloodworm?

One of our readers asked us to identify a bloodworm she used for fishing in Maine. Sadly, we don’t know the species of this marine bloodworm.

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Posted in Bristle Worms Gross Worms Worms Found in the House

Red Creature Staining Carpet is a Bloody Mystery

A woman in the United Kingdom has written to us with a rather odd query. She has found something that…

Woolly Worms or Wooly Bear six red segments
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Posted in Bristle Worms Caterpillars Composting Worms Wooly Bear Worms

Woolly Worms and Winter: Foreteller or Folklore?

Summary: Do the stripes of woolly worms stripes predict the length or severity of winter? It’s a long standing folk…

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Posted in Bristle Worms

Worm Found in Sink is a Bristle Worm

We attempted to identify the specimen in a photo a reader sent us. At first we thought it could be a centipede, but then we settled on the belief that it is a bristle worm!

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Posted in Bristle Worms Interesting Worms

Segmented Worm with Bristles and Antennae

We just received a message via our Facebook page from a reader who has been finding some curious creatures in her living room. She also included a photo that shows a segmented, light brown critter with plenty of bristly legs and antenna. Our initial assumption is that this is either a centipede or millipede, due to the segments, legs, and antennae. However, the specimen doesn’t really look like either of these, so we want to explore some other options.

bristle worm
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Posted in Bristle Worms Marine Worms

Bristle Worms Dying in Aquarium

We received a question via the All About Worms Facebook page from a reader whose bristle worms have died in his aquarium. Actually, the worms didn’t just die, but “simultaneously combusted,” although presumably this can’t be taken too literally, as we don’t see how worms in a fish tank could be consumed by fire. The reader isn’t worried about the worms themselves, but he is concerned if the death of the bristle worms is a bad portent, spelling trouble for the rest of the tank. So, essentially, the reader wants to know what it means when the bristle worms in your aquarium die.

bristle worm
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Posted in Bristle Worms Interesting Worms

Where Can I Find Poisonous Worms?

It is rare to come across a worm that stings outside of tropical regions, but if you do, chances are it is a bristle worm. Bristle worms may release “poison” when it stings, but the poison is not harmful to humans, only other very small animals.

Posted in Bristle Worms Earthworms

Poisonous Worms

Bristle worms can be found in other parts of the world as well. Some are errant, meaning, they move along the shoreline and shallow water, while others are tube-binding which means they build a permanent tube or home along the shoreline flats.

Posted in Bristle Worms Flatworm Leeches Segmented Worms Annelida

Marine Worms

Marine worms come in a variety of shapes and sizes. They may be long and thin, plumb and short, flattened and floppy, bright and colorful or dull and dark.

Posted in Bristle Worms Earthworms Marine Worms Segmented Worms Annelida

Limb Boring Worm

The limb boring worm tunnels into hard materials such as rocks and shells. While you may never witness a boring worm in action, you may notice their bodies sticking out of mollusk shells and rock cracks after they have tunneled through.

Posted in Bristle Worms Interesting Worms Segmented Worms Annelida

Bristle Worm

Large bristle worms are usually gray or brownish in color. Some are also salmon pink with white setae around the body. Like most worms, bristle worms are nocturnal, so they are not usually around during the day.

Posted in Bristle Worms Segmented Worms Annelida

When Bristle Worms Attack

Bristle worms belong to the family Polychaete. The common name is Acropora Crab. Bristle worms are usually found under rocks and corals in a number of different tropical areas throughout the world.

Posted in Bristle Worms Earthworms Interesting Worms Segmented Worms Annelida

Anatomy of a Worm

While a lizard will lose its tail as a means of protection, if a worm loses either end (the anterior…

Posted in Bristle Worms Earthworms Inch Worms Interesting Worms Leeches Segmented Worms Annelida

Worms and “Coiling”

There are literally hundreds of thousands of worm species in the world today and roughly 2,700 are earthworms. Although there…

Posted in Bristle Worms Earthworms Garden Worms Gross Worms Inch Worms Interesting Worms Meal Worms Pest Worms Segmented Worms Annelida


There are more than 2,700 species of earthworms in existence today and they can be found in just about every…

Posted in Bristle Worms Interesting Worms Wooly Bear Worms

Woolly Worm Folklore

The woolly worm is actually a caterpillar or the larvae of the Isabella tiger moth. The tiger moth belongs to…

Posted in Bristle Worms Interesting Worms Red Worms Wooly Bear Worms

Banded Woolly Bear

While the banded woolly bear does not use its bristles for protection, it has another defense mechanism. If handled or threatened in any way, the banded woolly bear will simply play dead.

Posted in Bristle Worms Fishing Worms Interesting Worms Segmented Worms Annelida

Are Bristleworm Stings Dangerous?

The bristles or “setae” of the bristleworm are so tough that they can penetrate skin, causing a painful “sting.” Depending on the type of bristleworm, the sting can cause burning, inflammation, numbness, pain, redness, and swelling at the bite or sting site.