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This broadclub cuttlefish (Sepia latimanus) can change from camouflage tans and browns (top) to yellow with dark highlights (bottom) in less than one second. Cuttlefish are sometimes referred to as the " chameleons of the sea" because of their ability to rapidly alter their skin color – this can occur within one second.
The cuttlebone of a cuttlefish. This is the largest hard part of a cuttlefish, maintaining the rigidity of its body.. The common cuttlefish is one of the largest species of cuttlefish with a mantle length reaching up to 45 cm and a mass of 4 kg on a presumed male, although this is for an exceptional specimen in temperate waters; specimens in subtropical waters rarely surpass a mantle length of ...
Some older fossils have been described from the Devonian, [4] but paleontologists disagree about whether they are coleoids. [5] Other cephalopods with internal shells, which could represent coleoids but may also denote the independent internalization of the shell, are known from the Silurian . [ 6 ]
The broadclub cuttlefish is the second largest cuttlefish species after Sepia apama, growing to 50 cm (20 in) in mantle length and 10 kg (22 lb) in weight. [7] Like many cephalopods, the broadclub can be seen displaying a range of colors and textures. Commonly they are light brown or yellowish with white mottled markings.
They are further differentiated by having a rigid body supported by a cuttlebone; this mantle is distinct, whereas in octopuses the head and mantle surface have fused together. Sepia mestus is commonly referred to as the red cuttlefish. When undisturbed it is typically recognized by its red colouration and two dark spots on the posterior of the ...
The fish range in size from about 3.83 inches to about 4.86 inches long, the study said. They were collected from between approximately 630 feet underwater to about 985 feet underwater.
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Cuttlebone, also known as cuttlefish bone, is a hard, brittle internal structure (an internal shell) found in all members of the family Sepiidae, commonly known as cuttlefish, within the cephalopods. In other cephalopod families it is called a gladius .