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Crossota millsae : ウィキペディア英語版 | Crossota millsae
''Crossota millsae'' is a species of deep-sea jellyfish.〔Thuesen, E.V., 2003. ''Crossota millsae'' (Cnidaria: Trachymedusae: Rhopalonematidae), a new species of viviparous hydromedusa from the deep sea off California and Hawaii. ''Zootaxa'', 309: 1-12 http://www.mapress.com/zootaxa/2003f/zt00309.pdf〕 Males and females have both been described, and it reproduces sexually. They are viviparous and females brood baby medusae attached to the gastric canals inside the sub-umbrellar space. ==Distribution== ''Crossota millsae'' was first described from the Pacific Ocean off Hawaii and California.〔 It was subsequently found in the Arctic Ocean.〔http://www.mpcfaculty.net/kevin_raskoff/arctic.htm〕〔http://news.bbc.co.uk/earth/hi/earth_news/newsid_8231000/8231553.stm〕 It lives below 1 km depth in all three regions. Its highest abundance is found at 2500 m off California and 1250 m off Hawaii. In the Arctic Ocean, it has been observed sitting on the seafloor.〔Raskoff, K.A., R.R. Hopcroft, K.N. Kosobokova, J.E. Purcell, & M. Youngbluth, 2009. Jellies under ice: ROV observations from the Arctic 2005 hidden ocean expedition, ''Deep-sea Research II''〕
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