ext_64212 ([identity profile] urbpan.livejournal.com) wrote in [personal profile] urbpan 2006-09-20 09:41 am (UTC)

Only inasmuch as they are squishy things that live in the water. Sea squirts are actually our closest invertebrate relatives.

http://depts.washington.edu/fhlk12/StudentProjects/Tun.biology.html
http://www.nature.com/nature/journal/v439/n7079/abs/nature04336.html

I suppose a sessile existance is common to many unrelated marine animals, all of which can be inconvenient to human industry: barnicles, zebra mussels, sea squirts, bryozoans, and so on.

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