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Giant squid are described by Aristotle (4th century BC) in his History of Animals [57] and Pliny the Elder (1st century AD) in his Natural History. [ 58 ] [ 59 ] [ 60 ] The Gorgon of Greek mythology may have been inspired by the octopus or squid, the severed head of Medusa representing the animal, the beak as the protruding tongue and fangs ...
Histioteuthis heteropsis, known as the strawberry squid, is a species of small cock-eyed squid. [2] The scientific nomenclature of these squid stems from their set of differently sized eyes, one being small and blue and the other being large and yellow.
For example, the common cuttlefish and the opalescent inshore squid (Doryteuthis opalescens) have yellow, red, and brown, the European common squid (Alloteuthis subulata) has yellow and red, and the common octopus has yellow, orange, red, brown, and black. [46] In cuttlefish, activation of a chromatophore can expand its surface area by 500%.
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As a result, the vast majority of human babies must rotate inside the birth canal in order to squeeze through the birthing canal and fit through the pelvic planes. This process is known as a rotational birth, and while it is not a process unique to humans, humans are unique in that nearly all human babies undergo this process out of necessity.
Human reproduction naturally takes place as internal fertilization by sexual intercourse. During this process, the man inserts his erect penis into the woman's vagina and then either partner initiates rhythmic pelvic thrusts until the man achieves orgasm , which leads to ejaculation of semen containing sperm into the vaginal canal.
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Size comparison with a human. Unlike most squid species, the colossal squid exhibits abyssal gigantism, as it is the heaviest living invertebrate species, reaching weights up to 495 kg (1,091 lb). [3] For comparison, squids typically have a mantle length of about 30 cm (12 in) and weigh about 100–200 g (3 + 1 ⁄ 2 –7 oz). [10]