Dark tube with white spikes

NanoReef303

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Wondering what this small dark tube with white spikes is. I found it on top of my sand bed today in my 20g reef tank. It wasn’t alive and was pretty brittle when I picked it up with tweezers. Pretty small, you can see it in relation to the tips of a small pair of tweezers in the pics. Almost looks like something from an urchin, but I haven’t had any urchins in the tank. Guess it could have just came in the bag of sand I used to start the tank several years ago and I just noticed it today.

IMG_1355.jpeg IMG_1354.jpeg
 

Dan_P

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Wondering what this small dark tube with white spikes is. I found it on top of my sand bed today in my 20g reef tank. It wasn’t alive and was pretty brittle when I picked it up with tweezers. Pretty small, you can see it in relation to the tips of a small pair of tweezers in the pics. Almost looks like something from an urchin, but I haven’t had any urchins in the tank. Guess it could have just came in the bag of sand I used to start the tank several years ago and I just noticed it today.

IMG_1355.jpeg IMG_1354.jpeg
The white tube looks that of a small fan worm. The dark matter doesn’t look like anything.
 
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