![]() Until recently, because of the curve of a camera's lens, the picture often blurred at the edges. Octopus eyes are so advanced that camera manufacturers have used their eyes as a model to improve the camera lens. Ranging in size from the one-fourth gram male pillow octopus to the record 600 pound (272 kilograms) plus giant Pacific octopus, this most advanced of invertebrates has flabbergasted and amused researchers for years. Octopi, octopods, octopuses and other variations are all used by scientists. The pillow octopus is just one fascinating example of the octopus order ( octopoda), which is as varied as the different plural forms of its name. He can do this because he himself is immune to their sting. The male pillow octopus has also been known to rip off the poisonous tentacles of Portuguese man-of-war jellyfish and wield them as make-shift swords to ward off predators. He simply tears off this arm and politely hands it to his mammoth female mate, who then saves it for later use. Males of this species have a modified arm that contains long rows of sperm. Luckily for the male pillow octopus, however, mating isn't a full contact sport. In human terms that would be like a man asking out a woman four times the size of the Statue of Liberty or a woman flirtatiously giving her phone number to a man the size of a beetle.
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