Chironex (lit. 'hand of violent death') is a genus of box jellyfish in the family Chirodropidae. Their stings are highly venomous, and have caused human fatalities. Based on present knowledge, the genus is restricted to the central Indo-Pacific, ranging from southern Japan to northern Australia.Fenner, P. J. (2000). Chironex fleckeri – the north Australian box-jellyfish. marine-medic.com
Species The World Register of Marine Species lists the following species: Chironex blakangmati Iesa et al., 2026 Chironex fleckeri Southcott, 1956 Chironex indrasaksajiae Sucharitakul, 2017 Chironex yamaguchii Lewis & Bentlage, 2009
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