Cuttlefish pictures

 
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Cuttlefish Photos Showing This Animal that Can Change Color in a Flash

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Cuttlefish, Sepia sp., are marine invertebrates closely related to octopus and squid, and are often called the chameleon of the sea for their incredible ability to camoflage themselves. Despite their name, they are not fish, and considered to be the most intelligent of the marine invertebrates Cuttlefish are photochromic, and can rapidly alter their skin color at will to blend in with whatever their background is. They also use rapidly changing color patterns to signal and communicate with other cuttlefish. This color changie is produced by groups of red, yellow, brown, and black pigmented chromatophores, above a layer of reflective iridophores and leucophores, with up to 200 of these special cells per square millimeter. All of the cells can be used in combination to produce a wide range of colors, including metallics and iridescent colors.

The cuttlefish propels itself by spurts, drawing water into a compression chamber which it squeezes to jet the water out a funnel under the head. It can change direction by swiveling the funnel, and narrowing the funnel speed. Cuttlefish have an internal shell, known as cuttlebone, that differentiates them from squid and octopus. Cuttlebone is known as the material given to caged birds as a source of calcium. The mantle houses the cuttlebone, reproductive organs and digestive organs. The head is at the base of the mantle with eyes on either side and a beak-like jaw in the center. Below the mantle are eight arms, and two prehensile, retractable tentacles covered in suckers with which to seize their prey.

Cuttlefish have three hearts, one for each gill, and one to pump blood around the rest of their body. Their blood is greenish blue and uses hemocyanin to carry oxygen instead of the hemoglobin used by red-blooded mammals. Another unusual feature is their eyes, which are among the most developed in the animal kingdom. The pupil is in a W shape, and they see polarization of light rather than color which give them a greater contrast. They change focus by reshaping the entire eye, instead of just the lens.

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Picture of a cuttlefish, Rossia macrosoma, Sognefjord, Norway, Atlantic Ocean

Picture #: 009172

Stock photo of common European cuttlefish, Sepia officinalis, Corsica, France, Mediterranean Sea

Picture #: 009173

Picture of cuttlefish, Sepia sp., Irian Jaya, Indonesia, Pacific Ocean

Picture #: 007005

Picture of a cuttlefish, Sepia latimanus, at night, Challenger Reef, Ribbon Reefs Great Barrier Reef, Australia

Picture #: 003518

picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish

Picture of a female cuttlefish, Sepia pharaonis, in foreground being courted by the smaller male behind, Thailand, Indian Ocean

Picture #: 013220

Stock photo of a cuttlefish, Sepioteuthis lessoniana, Egypt, Red Sea

Picture #: 050046

Picture of a cuttlefish, Sepia pharaonis, hovers with tentacles extended, Richelieu Rock, Thailand, Andaman Sea, Indian Ocean

Picture #: 025698

Picture of a common cuttlefish., Sepia officinalis

Picture #: 017124

picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish

Picture of a close up of cuttlefish pair courting, Sepia pharaonis, Richelieu Rock, Thailand, Andaman Sea, Indian Ocean

Picture #: 025650

Stock photo of a cuttlefish, Sepia sp., Papua New Guinea, Pacific

Picture #: 025642

Picture of a European cuttlefish, Sepia officinalis

Picture #: 023528

Picture of a cuttlefish mating, Sepia pharaonis, Richelieu Rock, Thailand, Andaman Sea, Indian Ocean

Picture #: 025699

picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish

Picture of a cuttlefish catching shrimp, Sepia tokioensis, Mikiura, Kii peninsula, Mie, Japan, Pacific Ocean

Picture #: 114172

Stock photo of reef cuttlefish, Sepia sp., Harrier Reef, Great Barrier Reef, Australia, South Pacific

Picture #: 025285

Picture of close up of Australian giant cuttlefish, Sepia apama, Jervis Bay , New South Wales, Australia, Pacific Ocean

Picture #: 080032

Picture of detail of cuttlefish skin, Sepia pharaonis, showing chromatophores, Richelieu Rock, Thailand, Andaman Sea, Indian Ocean

Picture #: 025648

picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish picture of a cuttlefish

Picture of a cuttlefish. sp.?

Picture #: 025652

Stock photo of a cuttlefish, Sepia australis, far northern Great Barrier Reef, Coral Sea, Pacific

Picture #: 025640

Picture of a broadclub cuttlefish, Sepia latimanus, showing rapid color change from ths image to the next, #1 of 2, Kimbe Bay, Papua New Guinea, Pacific Ocean

Picture #: 009228

Picture of a broadclub cuttlefish, Sepia latimanus, showing rapid color change from previous image to this one, #2 of 2, Kimbe Bay, Papua New Guinea, Pacific Ocean

Picture #: 009229

 

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