Animal Phyla/Sipuncula
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![](//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Sipunculus_nudus.jpeg/300px-Sipunculus_nudus.jpeg)
Sipunculus nudus, a peanut worm.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Sipunculus_nudus.jpeg/300px-Sipunculus_nudus.jpeg)
- Sipuncula
- Name Meaning: Small tube
- English Common Name: Peanut worms
- Major distinguishing characteristics: Mouth surrounded by invertible tentacles
- Approximate number of species described: 144-320