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The finned octopus  Cirroteuthis muelleri  is abundant in the far northern hemisphere, yet limited records exist of a possible undescribed southern hemisphere species,  Cirroteuthis  cf.  muelleri . A single specimen of  C.  cf.  muelleri  was identified amongst material collected during a 2017 abyssal survey off eastern Australia. The specimen had a dorsal mantle length of about 116 mm when fresh and 56 mm following preservation and was captured at 2338−2581 m depth. Morphological characteristics of this specimen aligned closely with  C.  cf.  muelleri  from New Zealand, and differences in these to  C. muelleri  from the North Atlantic and North Pacific, combined with the disjunct distribution, warrant further investigation of the southern hemisphere specimens as a possible new species. This discovery represents a significant range extension of  Cirroteuthis  and is the first occurrence of this genus from Australian waters.

Finned octopus Cirroteuthis Eschricht, 1836 (Cephalopoda: Cirrata: Cirroteuthidae) confirmed from Australian waters