Phylum Chordata Class Appendicularia Number of families 3
Transparent, generally small organisms that produce a complex external mucous net (the house) to collect tiny planktonic food and that retain the larval tadpole stage as sexually mature adults
Photo: An appendicularian (Oikopleura labradorien-sis) seen in the Gulf of Maine, USA. (Photo by ©Andrew J. Martinez/Photo Researchers, Inc. Reproduced by permission.)
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