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Graneledone boreopacifica is a deep-sea octopus found in the northeastern Pacific Ocean, including waters off California. A female observed at roughly 1,400 meters in Monterey Canyon guarded the same clutch of eggs for about 53 months, the longest directly documented brooding period for any animal....
The blackeyed squid (Gonatus onyx) is a species of armhook squid found in the North Pacific Ocean, typically inhabiting deep mesopelagic and bathypelagic zones. This cephalopod is anatomically recognized by its dark eyes and the presence of hooks on its arms. Female G. onyx are noted for their prolo...
Abatus cavernosus is a species of Antarctic heart urchin notable for its specialized brooding behavior, where females protect their young in depressions.
Abatus shackletoni is a brooding heart urchin from the Schizasteridae family, named in honor of the renowned Antarctic explorer Ernest Shackleton.
Abatus cordatus is an Antarctic-region schizasterid heart urchin described by Verrill in 1876 and listed from the Kerguelen Islands.
Abatus nimrodi is a species of irregular sea urchin discovered in the Southern Ocean, notable for being named after the historic Antarctic expedition.
Abatus agassizii is a southern-ocean schizasterid heart urchin, notable in a genus whose females brood young in specialized petal pouches.
Ctenocidaris nutrix is an Antarctic cidaroid described by Charles Wyville Thomson in 1876 and placed in a genus distinguished by specialized primary spines.
Abatus beatriceae is a brooding heart urchin described by Larrain in 1986 and recorded from cold subantarctic waters near southern South America.
Abatus koehleri is a southern-ocean heart urchin named by Paul Thiéry in 1909 and also known historically under Koehler's 1908 name Abatus elongatus.
