blue-ringed octopus
noun
: any of several venomous octopuses (genus Hapalochlaena) of the Indo-Pacific region that display brilliant blue rings on the skin when alarmed or agitated and are capable of inflicting a fatal bite due to the injection of tetrodotoxin
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“Blue-ringed octopus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/blue-ringed%20octopus. Accessed 29 Nov. 2024.
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