Grimpoteuthis challengeri is a species of large octopus living in the abyssal zone.

[4] Like other cirrate octopods, G. challengeri has fins on either side of its mantle that it uses to swim through the ocean.

[5] G. challengeri is a red-brown color when preserved, and its fins have a slight purple hue.

[1] G. challengeri is known from multiple specimens collected in the Porcupine Abyssal Plain of the Northeast Atlantic Ocean, while another specimen was found in the northwest Atlantic.

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