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Rhombosepia imperator 1

Rhombosepia imperator. This cuttlefish future, lozenge shape, is very different from his cousin 21st century. However, she inherited her tentacles with hooks, effective weapons to tackle large prey (as Benthogyrinus).

Systematics: mollusc, cephalopod, decapod (ten arms) sepoïdae (super family of cuttlefish), family rhombosepidae.

Etymology: From the Latin "rhombus" diamond (for the shape of the coat) and "sepia", cuttlefish. The name "Imperator" refers to the size and the deadly attacks of large predators.

Cousin of the 21st century: Sepia officinalis, Sepia prevalent in almost every sea and ocean of the world.

Rhombosepia-imperator

From top to bottom, the male and the female: as with cuttlefish 21st century, the female is even larger than the male.

Baby R. imperator

Baby monsters: This big baby of a meter long juvenile presents characters as large round eyes and short fins. But from an early age, he already has a sophisticated colorful dress.

Size: 10 meters long (twice with the tentacles).

Distribution: Distribution of Rhombosepia imperator is global. It hunts in photic zone in tropical waters, temperate and subpolar. Excellent diver, she is also able to reach extreme depths to get his food.

Evolution: Apart from size, the main transformations that marked the Evolution between the modern cuttlefish and R. imperator are hyper-expansion of the coat "wings", fusion of pseudo-jaw arm and migration of the siphon to the inside the mouth.

Rhombosepia-imperator.jpg 1

A deadly ambush where three large Rhombosepia imperator attack a Benthogyrinus female. Their hunting strategy is well established: black ink paralyzes the large amphibian. Once inert, the body is lacerated by the powerful tentacles of cephalopods.

Morphology: Like its cousin cuttlefish, Rhombosepia imperator owns extensible tentacles housed inside of the mouth, with suckers and hooks. Widen in "club", these powerful tentacles are projected in a flash on the prey with incredible precision. Rhombosepia imperator dispose a great variety of patterns and colors depending on his mood and message passing. This "skin that speaks", inherited from his cousin cuttlefish, is the result of the action of pigment cells found in the dermis: the chromatophores. The siphon, external in squid to migrate to the inside of the mouth in R. imperator He always expulsive ink but not used for propulsion. Mixed with a stun mucus, the ink turns into a formidable chemical weapon. Just as among cuttlefish, eyes R. imperator resemble ours-they are rounded with a pupil round- and are fitted with polarizing filters that reduce light reflections on the surface: effective not to miss their prey!

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