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The common octopus can hear sounds between 400 Hz and 1000 Hz, and hears best at 600 Hz. [66] Octopuses have an excellent somatosensory system. Their suction cups are equipped with chemoreceptors so they can taste what they touch. [67] Octopus arms move easily because the sensors recognise octopus skin and prevent self-attachment. [68]
Abdopus horridus, the Red Sea octopus or common reef octopus, is a species of octopus in the genus Abdopus from the western Indian Ocean. [2] It occurs in the western Indian Ocean and the Red Sea . It has a small body and long arms with a complex skin sculpture and pigmentation pattern on the body which it uses to camouflage itself.
The common octopus (Octopus vulgaris) is a mollusk belonging to the class Cephalopoda. Octopus vulgaris is one of the most studied of all octopus species, and also one of the most intelligent. It ranges from the eastern Atlantic, extends from the Mediterranean Sea and the southern coast of England , to the southern coast of South Africa.
Although the octopus fled immediately, I did manage to get a few shots against the backdrop of bright green tufts of seagrass (Zostera marina). Nikon D800, 3.5-4.5/8-15mm, ISO 500, Sea&Sea UW ...
Octopuses like this Octopus cyanea can change colour (and shape) for camouflage. In ancient Greece, Aristotle (384–322 BC) commented on the colour-changing abilities, both for camouflage and for signalling, of cephalopods including the octopus, in his Historia animalium: [1]
Awesome New Camouflage Sheet Was Inspired By Octopus Skin And now, scientists inspired by their impressive camouflage techniques are working on a device that could make humans just as adept at ...
Consequently, cephalopod vision is acute: training experiments have shown that the common octopus can distinguish the brightness, size, shape, and horizontal or vertical orientation of objects. The morphological construction gives cephalopod eyes the same performance as shark eyes; however, their construction differs, as cephalopods lack a ...
This process, often used as a type of camouflage, is called physiological colour change or metachrosis. [1] Cephalopods, such as the octopus, have complex chromatophore organs controlled by muscles to achieve this, whereas vertebrates such as chameleons generate a similar effect by cell signalling.