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Barring a few exceptions, octopuses have eight arms and no tentacles, while squid and cuttlefish have eight arms (or two "legs" and six "arms") and two tentacles. [5] The limbs of nautiluses, which number around 90 and lack suckers altogether, are called cirri. [5] [6] [7]
Squid can expel up to 94% of the fluid within their cavity in a single jet thrust. [68] ... though developmental abnormalities can modify the number of arms expressed.
By comparison with the visible parts of the ROV, the squid was estimated to measure 7 metres (23 ft) with arms fully extended. [20] The Nautile filmed another Indian Ocean specimen at 19°32′S 65°52′E / 19.533°S 65.867°E / -19.533; 65.867 ( Bigfin squid (sighting 2000, Atalante) ) and 2,576 metres (8,451 ft), in the area ...
Like all squid, a giant squid has a mantle (torso), eight arms, and two longer tentacles (the longest known tentacles of any cephalopod). The arms and tentacles account for much of the squid's great length, making it much lighter than its chief predator, the sperm whale. Scientifically documented specimens have masses of hundreds, rather than ...
Decapodiformes is a superorder of Cephalopoda comprising all cephalopod species with ten limbs, specifically eight short arms and two long tentacles.It is hypothesized that the ancestral coleoid had five identical pairs of limbs, and that one branch of descendants evolved a modified arm pair IV to become the Decapodiformes, while another branch of descendants evolved and then eventually lost ...
Number of captured N. pompilius at various depths around the Osprey Reef Seamount, Coral Sea. The data was collated from 271 trapping events spread across all months of the year. Nautiluses were most common at 300–350 m (1,000–1,100 ft). No specimens were recovered from a depth of less than 150 m (500 ft) during 18 trapping efforts. [25]
Like other squid, Sthenoteuthis pteropus is bilaterally symmetrical and has a head with a pair of eyes, eight arms and two tentacles and a fleshy, muscular body known as the mantle. [3] The head is not retractable, the arms have blunt tips and there is a marked crest on the outer surface of the third pair.
The arms are thick and capable; the fins vary in shape and size, from sagittate and about 50% of the mantle length, to reniform and about 30% of the mantle length. Of moderate size, these squid range in size from 11 to 40 cm—most species are 25 cm or less.