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The fins of cirrate octopods are associated with a unique cartilage-like shell in a shell sac. In cross-section, the fins have distinct proximal and distal regions, both of which are covered by a thin surface sheath of muscle. The suborder is named for small, cilia-like strands (cirri) on the arms of the octopus, a pair for each sucker. These ...
The cirrate octopods have a unique internal shell, positioned dorsally above the viscera and with a 'saddle-like' shape (or 'butterfly-like' in Cirrothauma due to the anterior corners being more drawn out). The lateral faces of the 'saddle' acting as large attachment sites for fin muscles, supporting proportionally large and powerful fins.
Cirrothauma murrayi, the blind cirrate octopus, [2] is a nearly blind octopus whose eyes can sense light, but not form images. It has been found worldwide, usually 1,500 to 4,500 metres (4,900 to 14,800 ft) beneath the ocean's surface.
Additionally, the ability to squeeze into places predators may not be able to fit and/or reach allows individuals to hide. [13] A unique predatory evasion tactic that A. capricornicus possess is the ability to autotomize their arms, acting as a distraction to the predators, drawing attention away and allowing the octopus to escape. [3]
“It was cool to see the octopus ink to try to confuse the predator,” she wrote in the video’s description. The video shows the octopus spewing ink as it swims close to the camera.
Mating in cirrate octopuses has never been observed, and unlike other octopuses, members of Cirrata lack a hectocotylus for the transfer of sperm packets. [14] Cirrate octopus eggs are large and have a tough casing surrounding the chorion (not found in other octopuses), and Grimpoteuthis in particular attach their eggs to deep sea corals ...
Stauroteuthis is a genus of deepwater cirrate octopus, a cephalopod mollusk. This is the only genus in the family Stauroteuthidae , and only three species have been described in this genus. The organisms live below 700 m (2,300 ft) water depth; although sometimes found as deep as 4 km (2.5 mi) underwater, they generally live at a water depth of ...
Cirroteuthis muelleri is a deep sea species. It is found in cold seas in the boreal Arctic, the north Atlantic Ocean, and the north Pacific Ocean. [1] In the southern hemisphere at least three specimens have been captured of Cirroteuthis cf. muelleri from New Zealand and Australia, which may represent a new species.