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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.
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]
Octopus is a common ingredient in Japanese cuisine, including sushi, sashimi, karaage, stew, sour salad, takoyaki and akashiyaki. Takoyaki is a ball-shaped snack made of a wheat flour-based batter and cooked in a special takoyaki pan. It is typically filled with minced or diced octopus, tempura scraps , pickled ginger, and green onion.
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 ...
The common octopus, Octopus vulgaris. Octopus aquaculture is the captive raising of octopuses and commercial sale of their meat. A complex and labor-intensive form of farming, octopus aquaculture is being driven by strong market demand in the Mediterranean and in South American and Asian countries. [1]
It is common for these octopus to leave their den for short periods of time and eventually return to re-use the same den. [29] However, over longer periods of time, E. dofleini relocate to new dens situated relatively nearby, within an average distance of 13.2 meters.
An octopus at the Kanaloa Octopus Farm in Hawaii. California is now the second state to ban octopus farming, after Washington. (Carolyn Cole / Los Angeles Times)
Octopus tetricus, the gloomy octopus, the common Sydney octopus, [3] or the peachy octopus, [4] is a species of octopus from the subtropical waters of eastern Australia and northern New Zealand. [2] O. tetricus belongs to the Octopus vulgaris species group. All species within the O. vulgaris group are similar in morphology, [5] behaviour, and ...