Pengguna:SNN95/Kotak pasir/Tapak Sulaiman: Perbezaan antara semakan

 

===Distribution and habitat===

Echinoderms, including starfish, maintain a delicate internal [[electrolyte]] balance that is in equilibrium with sea water. This means that it is only possible for them to live in a marine environment and they are not found in any [[freshwater]] habitats.<ref name=Dorit/> Starfish species inhabit all of the world's oceans. Habitats range from tropical [[coral reef]]s, rocky shores, [[tidal pool]]s, mud, and sand to [[kelp forest]]s, [[Seagrass|seagrass meadows]]<ref name=grizmek>{{cite web |url=http://www.encyclopedia.com/article-1G2-3406700053/asteroidea-sea-stars.html |title=Asteroidea (Sea Stars) |year=2004 |work=Encyclopedia.com |publisher=Grzimek's Animal Life Encyclopedia |accessdate=2012-07-14}}</ref> and the deep-sea floor down to at least {{convert|6000|m|abbr=on}}.<ref>{{cite journal |author=Mah, Christopher; Nizinski, Martha; Lundsten, Lonny |year=2010 |title=Phylogenetic revision of the Hippasterinae (Goniasteridae; Asteroidea): systematics of deep sea corallivores, including one new genus and three new species |journal=Zoological Journal of the Linnean Society |volume=160 |issue=2 |pages=266–301 |doi=10.1111/j.1096-3642.2010.00638.x }}</ref> The greatest diversity of species occurs in coastal areas.<ref name=grizmek/>