[2] A female Graneledone boreopacifica was observed in the Monterey Canyon by the Monterey Bay Aquarium Research Institute, brooding her eggs for a record 53 months, making this the longest egg-brooding period known in the animal kingdom[3].

[3] Examination of the gut of this octopus revealed significant amounts of crushed gastropod shells (Provanna variabilis and Lepetodrilus fucensis).

The mandible muscles exhibit remarkable strength to crush the shells before digestion.

[6] Graneledone boreopacifica is found in benthic zones in temperate climates.

[7] The type specimen was collected in the Pacific Ocean (50°N, 151°E) and is deposited at the Zoological Institute in Saint Petersburg, Russia.