Animal Phyla/Nemertea
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![](//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Micrura_alaskensis.png/300px-Micrura_alaskensis.png)
Micrura alaskensis, a ribbon worm.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Micrura_alaskensis.png/300px-Micrura_alaskensis.png)
- Nemertea
- Name Meaning: A sea nymph
- English Common Name: Ribbon worms
- Major distinguishing characteristics:
- Approximate number of species described: about 1200