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Starfish

starfish

1. (Science: zoology) Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star-shaped and usually has five rays, though the number of rays varies from five to forty or more. The rays are often long, but are sometimes so short as to appear only as angles to the disklike body.

The ophiuroids are also sometimes called starfishes. See brittle star, and ophiuroidea.

Synonym: sea star, five-finger, and stellerid.


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Re:

... “vertebrates evolved from invertebrates.” But invertebrate by definition means “not a vertebrate.” Semantics. This is equivalent to claiming that starfish must have evolved from stars since their name has "star" in it. Evolve means to change, and a changed thing is not what it once was, ...

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by robsabba
Tue Aug 25, 2009 8:20 pm
 
Forum: Evolution
Topic: Natural selection is proven wrong
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The Colin Leslie Dean species paradox

... amphibians). There is also Arthropoda (insects, spiders, crustaceans); Mollusca (snails, squid, clam); Annelida (segmented worms); Echinodermata (starfish, sea urchins) and many, many more. http://en.wikipedia.org/wiki/Species Total number of species (estimated): 7 - 100 millions (identified and ...

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by gamila
Wed Jul 15, 2009 12:45 pm
 
Forum: Evolution
Topic: The Colin Leslie Dean species paradox
Replies: 120
Views: 2227

Re: ?{REGENERATION}? Is it possible ???!!

Why not sequence the axolotl, the starfish and others, and compare it to our own? There is definitely merit in examining oxygen intake. Ologists of some sort measured the oxygen level in a bubble encased in amber and found it to be around ...

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by havonasun
Sun Jun 21, 2009 5:16 am
 
Forum: Cell Biology
Topic: ?{REGENERATION}? Is it possible ???!!
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Biology is not a science

... amphibians). There is also Arthropoda (insects, spiders, crustaceans); Mollusca (snails, squid, clam); Annelida (segmented worms); Echinodermata (starfish, sea urchins) and many, many more.

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by gamila
Sun Jun 07, 2009 2:15 pm
 
Forum: General Discussion
Topic: Biology is not a science
Replies: 44
Views: 1429

Name of animal found in Boulogne-sur-Mer

Hi, I'm a biology-student first bachelor and a while ago we went to the coast of northern France (Boulogne-sur-mer). Apart from lots of lots of starfish, me and a friend found a small animal ( 1 - 2 cm length). It stuck itself on some Laminaria sacchari (Sea belt). Now, I asked the assistant the ...

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by NicholasBio
Tue Sep 23, 2008 6:54 pm
 
Forum: Zoology Discussion
Topic: Name of animal found in Boulogne-sur-Mer
Replies: 0
Views: 786
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