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Tag: "octopuses" at biology news

At the molecular level, the predator is the prey

...is a defensive compound found in some puffer fish, octopuses and primitive chordates. It is used in low concentrations to treat morphine and heroine addicts. It's also the "zombie" drug used by Haitian voodoo ritualists. Despite its action at the molecular level, the evolution of TTX in some organisms is view...

Cuttlefish masters of disguise despite colorblindness

...objects. Cuttlefish are cephalopods, relatives of octopuses and squid, and are found in all marine habitats worldwide; they are particularly abundant around coral reefs and temperate rock reefs in which the visual habitat is richly varied. Cephalopods can change their appearance with a speed and diversity unp...

How the octopus forms an elbow

... that these qualities have evolved convergently in octopuses and in vertebrates, and it also suggests that an articulated limb--controlled at the level of joints--is the optimal solution to the challenge of achieving precise point-to-point movements by a limb. ...

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