{{Short description|Genus of jellyfishes}} {{MOS|date=February 2025}} {{Speciesbox | image = Tiburonia granrojo- noaa expl0827.jpg | image2 = Tiburonia granrojo Unusualjellyfish.jpg | display_parents = 2 | grandparent_authority = Matsumoto ''et al.'', 2003<ref name=Matsumoto2003/> | genus = Tiburonia | parent_authority = Matsumoto ''et al.'', 2003<ref name=Matsumoto2003/> | species = granrojo | authority = Matsumoto ''et al.'', 2003<ref name=Matsumoto2003/> }}
'''''Tiburonia''''' is a genus of jellyfish in the family Ulmaridae. It was reported in 2003, following the discovery of its only species yet identified, '''''Tiburonia granrojo'''''. It was discovered by a crew from MBARI led by George Matsumoto.<ref name=":0">{{cite web |url=http://www.mbari.org/matsumoto-george/ |title=Dr. George I. Matsumoto, Ph.D |last= |first= |date= |website= |publisher=MBARI|access-date=}}</ref> Pieces of the medusae (bell margin and arms) were collected for morphological analysis, which eventually led to sequencing and taxonomic identification.<ref name="Matsumoto2003" /> The discovery of this organism led to not only a new species, but a new subfamily of Ulmaridae, called Tiburoniinae.<ref name=":0" /> Its genus was named ''Tiburonia'' after the ROV the crew were using, called ''Tiburon'', meaning "shark" in Spanish. Its species name, ''granrojo'', meaning "big red" in Spanish, leading to its English-language name, the '''big red jellyfish'''.<ref>{{cite web | url=https://ocean.si.edu/ocean-life/invertebrates/big-red-jellyfish | title=Big Red Jellyfish | Smithsonian Ocean }}</ref>
''Tiburonia granrojo'' lives at ocean depths of {{convert|600|to|1500|m}} and has been found across the Pacific Ocean in the Gulf of California, Monterey Bay, Hawaii and Japan. The jellyfish is deep-red in color. It can grow up to one meter in diameter<ref name=Matsumoto2003/> according to the California Academy of Sciences and has between 4 and 7 flesh arms in place of tentacles found in most jellyfish.
{{multiple image | direction = vertical | width = 180 | align = left | header = Davidson Seamount specimen, 18 May 2002 | image1 = Tiburonia granrojo- noaa expl0827 detail1.jpg | image2 = Tiburonia granrojo- noaa expl0783.jpg | image3 = Tiburonia granrojo- noaa expl0783 detail1.jpg }} To date, only 23 members of the species have been found and only one, a small specimen under {{convert|15|cm|sigfig=1}}, has been retrieved for further study. Several high-resolution videos of ''granrojo'' have been taken by remote controlled submarines. The discovery was announced by Dr. Matsumoto and colleagues in ''Marine Biology'' in 2003.<ref name=Matsumoto2003>{{Cite journal | doi = 10.1007/s00227-003-1047-2 | volume = 143 | issue = 1 | pages = 73–77 | last1 = Matsumoto | first1 = George I. | first2 = K. A. | last2 = Raskoff | first3 = D. J. | last3 = Lindsay | title = ''Tiburonia granrojo'' n. sp., a mesopelagic scyphomedusa from the Pacific Ocean representing the type of a new subfamily (class Scyphozoa: order Semaeostomeae: family Ulmaridae: subfamily Tiburoniinae subfam. nov.) | journal = Marine Biology |date=July 2003 | bibcode = 2003MarBi.143...73M | s2cid = 84226603 }}</ref> The first specimen of the species was obtained around the Japan trench and was placed in the National Science Museum in Tokyo.<ref>{{Cite journal|last1=Lindsay|first1=Dhugal J.|last2=Furushima|first2=Yasuo|last3=Miyake|first3=Hiroshi|last4=Kitamura|first4=Minoru|last5=Hunt|first5=James C.|date=2004-11-01|title=The scyphomedusan fauna of the Japan Trench: preliminary results from a remotely-operated vehicle|url=https://doi.org/10.1007/s10750-004-2645-9|journal=Hydrobiologia|language=en|volume=530|issue=1|pages=537–547|doi=10.1007/s10750-004-2645-9|bibcode=2004HyBio.530..537L |s2cid=19296204 |issn=1573-5117|url-access=subscription}}</ref>
== References== {{Reflist}}
=== Further reading === {{refbegin}} *{{Cite journal | volume = 84 | issue = 1 | pages = 37–42 | last1 = Raskoff | first1 = K. A. | first2 = George I. | last2 = Matsumoto | title = ''Stellamedusa ventana'', a new mesopelagic scyphomedusa from the eastern Pacific representing a new subfamily, the Stellamedusinae | journal = Journal of the Marine Biological Association of the UK |date=February 2004 | doi = 10.1017/S0025315404008884h | bibcode = 2004JMBUK..84...37R | s2cid = 85918326 }} *{{Cite journal | volume = 54 | issue = 8 | pages = 1241–1255 | last1 = Osborn | first1 = Dawn Alexandra | first2 = Mary W. | last2 = Silver | first3 = Carmen G. | last3 = Castro | first4 = Shannon M. | last4 = Bros | first5 = Francisco P. | last5 = Chavez | title = The habitat of mesopelagic scyphomedusae in Monterey Bay, California | journal = Deep-Sea Research Part I: Oceanographic Research Papers |date=August 2007 | doi = 10.1016/j.dsr.2007.04.015 | bibcode = 2007DSRI...54.1241O }} *{{Cite journal | volume = 530–531 | issue = 1–3 | pages = 537–547 | last1 = Lindsay | first1 = Dhugal J. | first2 = Yasuo | last2 = Furushima | first3 = Hiroshi | last3 = Miyake | first4 = Minoru | last4 = Kitamura | first5 = James C. | last5 = Hunt | title = The scyphomedusan fauna of the Japan Trench: preliminary results from a remotely-operated vehicle | journal = Hydrobiologia |date=November 2004 | doi = 10.1007/s10750-004-2645-9 | bibcode = 2004HyBio.530..537L | s2cid = 19296204 }} {{refend}}
== External links == * [https://web.archive.org/web/20070509035301/http://www.calacademy.org/science_now/archive/headline_science/redjelly.php Article in the California Academic of Sciences' ''Science Now''] (Several high-quality images) * [https://web.archive.org/web/20040430003254/http://www.seasabres.com/Safty-education/Education/Big%20red%20jelly%20fish.htm Article for National Geographic Today] * [http://www.innovations-report.com/html/reports/life_sciences/report-18198.html Report in ''Innovations Report''] * [http://www.mbari.org/big-red-jelly-surprises-scientists/ Release in MBARI News] * [http://ocean.si.edu/ocean-photos/big-red-jellyfish Big Red Jellyfish | Smithsonian Ocean Portal]
{{Taxonbar|from1=Q21091020|from2=Q1807155|from3=Q21231625}}
Category:Ulmaridae Category:Scyphozoan genera Category:Monotypic Cnidaria genera Category:Cnidarians of the Pacific Ocean Category:Marine fauna of Asia Category:Marine fauna of North America Category:Marine fauna of the Gulf of California Category:Western North American coastal fauna Category:Fauna of California Category:Taxa described in 2003