Martialia is a genus of flying squids in the family Ommastrephidae. It is monotypic, being represented by the single species Martialia hyadesii, commonly known as the sevenstar flying squid. It has a maximum mantle length of , although it is typically , with a body weighing up to .
Distribution M. hyadesii occurs in epipelagic and mesopelagic waters of the Southern Ocean. Its range may be circumpolar with a Sub-Antarctic distribution.
Ecology These large squid are known to prey upon deep-sea ridgeheads and other mesopelagic fish, and to be preyed upon in turn by seals, king penguins and albatrosses.
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