Editing Hexactinellid (section)

==Reefs==
The sponges form reefs (called [[sponge reef]]s) off the coast of [[British Columbia]], southeast [[Alaska]] and [[Washington (state)|Washington state]],<ref>{{cite news | first1=Lisa | last1=Stiffler | date=2007-07-27  | title=Reef of glass sponges found off Washington's coast | newspaper=[[Seattle Post-Intelligencer]] | url=http://www.seattlepi.com/local/325489_sponge28.html | via=seattlepi.com }}</ref> which are studied by the [[Sponge Reef Project]]. In the case of ''[[Sarostegia oculata]]'', this species almost always hosts symbiotic [[Zoantharia|zoanthids]], which cause the hexactinellid sponge to imitate the appearance and structure of coral reefs.<ref name=":02">{{cite journal |last1=Hajdu |first1=Eduardo |last2=Castello-Branco |first2=Cristiana |last3=Lopes |first3=Daniela A. |last4=Sumida |first4=Paulo Yukio Gomes |last5=Perez |first5=Jose Angel Alvarez |date=December 2017 |title=Deep-sea dives reveal an unexpected hexactinellid sponge garden on the Rio Grande Rise (SW Atlantic). A mimicking habitat? |journal=Deep Sea Research Part II: Topical Studies in Oceanography |volume=146 |pages=93–100 |doi=10.1016/j.dsr2.2017.11.009 |bibcode=2017DSRII.146...93H |url=https://linkinghub.elsevier.com/retrieve/pii/S0967064517304149 |lang=en }}</ref> Only 33&nbsp;species of this sponge have ever been reported in the South Atlantic until 2017 when the submersible ''Shinka&nbsp;6500'' went on an expedition through the Rio Grande Rise.<ref name=":02"/> Reefs discovered in [[Hecate Strait]], British Columbia, have grown to up to 7&nbsp;kilometres long and 20&nbsp;metres high. Prior to these discoveries, sponge reefs were thought to have died out in the [[Jurassic]] period.<ref>{{cite news |title=B.C.'s reefs among science's great finds |date=2005-02-24 |work=Georgia Straight Vancouver's News & Entertainment Weekly |url=https://www.straight.com/article/b-c-s-reefs-among-sciences-great-finds |via=straight.com |access-date=2017-05-22 |lang=en }}</ref><ref>{{Cite news|url=http://www.cbc.ca/radio/quirks/diving-deep-for-glass-sponges-1.4124452?autoplay=true|title=Diving deep for glass sponges |publisher=[[CBC Radio]]|access-date=2017-05-22|language=en}}</ref>

Reports of glass sponges have also been recorded on the HMCS ''[[HMCS Saskatchewan (DDE 262)|Saskatchewan]]'' and HMCS ''[[HMCS Cape Breton (ARE 100)|Cape Breton]]'' wrecks off the coast of [[Vancouver Island]]. Species of zoantharin that rely on hexactinellid have also been found off the coast of the Japanese island of Minami-Torishima. Unidentified species of zoanthids have also been found in Australian waters, if these are identified as the same as the ones found in Minami-Torishima, this could potentially be proof of hexactinellids existing in all of the Pacific Ocean.<ref>{{cite journal |last1=Kise |first1=Hiroki |last2=Nishijima |first2=Miyuki |last3=Iguchi |first3=Akira |last4=Minatoya |first4=Junpei |last5=Yokooka |first5=Hiroyuki |last6=Ise |first6=Yuji |last7=Suzuki |first7=Atsushi |date=2023-03-24 |title=A new hexactinellid-sponge-associated zoantharian (Porifera, Hexasterophora) from the northwestern Pacific Ocean |journal=ZooKeys |issue=1156 |pages=71–85 |doi=10.3897/zookeys.1156.96698 |doi-access=free |issn=1313-2970 |pmc=10208231 |pmid=37234793 |bibcode=2023ZooK.1156...71K }}</ref>