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Opisthoteuthis robsoni, also known as the deep-water umbrella octopus, [3] is a deep-sea octopus living off New Zealand on the Chatham Rise. It has been found from 1,178–1,723 m (3,865–5,653 ft) below the surface. Not much is known about the octopus' habitat or life cycle, as only four specimens have been found.
Octopuses can maintain a constant oxygen uptake even when oxygen concentrations in the water decrease to around 3.5 kPa (0.51 psi) [22] or 31.6% saturation (standard deviation 8.3%). [17] If oxygen saturation in sea water drops to about 1–10% it can be fatal for Octopus vulgaris depending on the weight of the animal and the water temperature ...
The common octopus can hear sounds between 400 Hz and 1000 Hz, and hears best at 600 Hz. [61] Octopuses have an excellent somatosensory system. Their suction cups are equipped with chemoreceptors so they can taste what they touch. Octopus arms move easily because the sensors recognise octopus skin and prevent self-attachment. [62]
Researchers believe the shorter brooding period near warm hydrothermal springs increases a hatchling octopus’ odds for survival. Mystery of octopus garden in ocean’s midnight zone solved by ...
Scientists spotted a rare “Dumbo” octopus over 5,500 feet deep in the waters off the Hawaiian islands.. The creature, named after the Disney cartoon for the large pair of flapping fins ...
Opisthoteuthis agassizii is a lesser-known, deep-sea octopus first described in 1883 by Addison E. Verrill. [5] Like all cirrate octopuses, O. agassizii has fleshy fins to aid in swimming and a small internal shell. Males are up to four times heavier than females, [6] and their suckers are proportionally larger. Both sexes are small.
The oral surface can be facing the floor, or the octopuses may lie laterally so their side is in contact with the floor. It has been noted that these defensive behaviors are the positions the octopuses may go into while feeding as well, but it is possible that this could be because of the stress of being captured and placed in an aquarium to be ...
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