sea squirt

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Related to Sea squirts: Urochordata

sea squirt:

see tunicatetunicate
, marine animal of the phylum Chordata, which also includes the vertebrates. The adult form of most tunicates (also called urochordates) shows no resemblance to vertebrate animals, but such a resemblance is evident in the larva.
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sea squirt

[′sē ‚skwərt]
(invertebrate zoology)
A sessile, marine tunicate of the class Ascidiacea; it squirts water from two openings in the unattached end when touched or disturbed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
| From top: Honeycomb |worm, sea squirt, Lion's Mane Jellyfish, Floating Terror Menai oysters and Ocean Quahog (main)
Don't we all know employees who, like sea squirts, retire on the job?
The drug is based on a chemical found in sea squirts. PharmaMar, Zeltia's cancer research unit, started selling the medicine in 2007 after two decades of probing marine life for treatments for human illnesses.
STOCKHOLM -- Trabectedin, a synthetic version of a compound derived from sea squirts, significantly delayed progression of recurrent ovarian cancer in a large, randomized phase III trial presented at the European Society for Medical Oncology Congress.
A recent 10-week expedition turned up 15 potentially new shrimplike species, 4 potentially new corallike species, and lots of sea cucumbers, sea squirts, sponges, and more.
The disappearing ice had invited newcomers into the area, such as fast-growing, gelatinous sea squirts and slow-growing animals called glass sponges.
Other scientists are developing compounds from mangrove tunicates, or sea squirts, that show great potential as an anti-tumor treatment.
Natural products effective against certain cancers have been identified: bryostatin from the colonial bryozoan, ecteinascidin from ascidians or sea squirts, and discodermolide from deep-sea sponges.
Recently, a new species of sea squirt (a slimy pink marine animal) showed up in Puget Sound, Washington, alarming shellfish growers (sea squirts can overgrow harvestable blue mussels).
This substance (also called Yondelis), which is extracted from sea squirts, can be used as a chemotherapeutic agent.
The Australian fur seal and the southern rock lobster are found here, but rocky reefs along the Tasmanian and mainland coastlines also support seahorses, sponges, sea anemones, lace corals, tube worms and sea squirts, sea pens, sea whips and barnacles, and provide home for abalone, sea urchins, wrasse, perch and leatherjackets.
Until now, the earliest deuterostomes scientists have discovered were between 510 and 520 million years old, when they had already begun to diversify into vertebrates, sea squirts, echinoderms such as starfish and sea urchins, and hemichordates.