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An octopus in a zoo. Due to their intelligence, cephalopods are commonly protected by animal testing regulations that do not usually apply to invertebrates. In the UK from 1993 to 2012, the common octopus (Octopus vulgaris) was the only invertebrate protected under the Animals (Scientific Procedures) Act 1986. [48]
The giant Pacific octopus (Enteroctopus dofleini) is often cited as the largest known octopus species. Adults usually weigh around 15 kg (33 lb), with an arm span of up to 4.3 m (14 ft). [19] The largest specimen of this species to be scientifically documented was an animal with a live mass of 71 kg (157 lb). [20]
East Pacific red octopus, rescued from a gull near Los Osos, California. Octopus rubescens (commonly the East Pacific red octopus which is a Cephalopod, and also known as the ruby octopus, a preferred common name due to the abundance of octopus species colloquially known as red octopus [1]) is the most commonly occurring shallow-water octopus on much of the North American West Coast and a ...
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.
Wunderpus photogenicus, the wunderpus octopus, is a small-bodied species of octopus with distinct white and rusty brown coloration. [2] 'Wunderpus' from German "wunder" meaning 'marvel or wonder'. [3] Due to the appearance and behavior of the wunderpus, it is frequently confused with its close relative, the mimic octopus.
Adult males are larger than females, with a total length of 482 mm and a weight of 5400 grams, while the females have a total length of 342 mm and a weight of 1650 g. [1] Females of the Opisthoteuthis calypso have been shown to have ovarian oocyte size frequency which is akin to species that show continuous egg production and release, alluding ...
What makes this octopus famous is its venom. Saliva glands of the southern blue-ringed octopus produce the deadly neurotoxin, maculotoxin. [10] The neurotoxin, tetrodotoxin (TTX), is secreted in the posterior salivary gland, which is located in the intestinal blood system of the octopus. This may provide the toxin into its bloodstream.
Bathypolypus sponsalis, commonly called the globose octopus, is a deep sea cephalopod that can be found in both the eastern Atlantic Ocean and the Mediterranean Sea. It possesses many morphological traits adapted to a deep sea environment, including large eggs, reduced gills , no ink sac , and subgelatinous tissues.