Octopuses are amazing. In honor of World Oceans Day, here are eight facts about these incredible creatures.8. Octopuses are masters of camouflage. However, research suggests that octopuses don't try to blend into their entire environment—to look like coral, sand and seaweed all at once.
What has eight arms, no bones and hundreds of bright, twinkly lights? The glowing sucker octopus ( Stauroteuthis syrtensis ), of course.This flashy octopod is one of the few of its kind to have true bioluminescence, a trait much more common in two other cephalopod relatives, squid and cuttlefish.
Big eyes can be a big benefit—allowing an animal to see potential prey and predators coming from a wider field. For the octopus, this is especially important in the open ocean, where knowing what is around—or above or below—you is crucial for survival.One type of octopus has taken a different approach to wide-angle vision.
The vast majority of octopus species live along the sea floor—whether that is in the sandy shallows off a tropical coast or in the dark depths around hydrothermal vents.
Octopuses that live in the deep open ocean are difficult enough to find. But try locating a "glass" octopus, which is nearly transparent. Floating in the dim midwaters, this gelatinous octopod looks almost like a be-suckered jellyfish.Rather than camouflaging like most known octopus species, the Vitreledonella richardi has taken this alternative approach to hide from potential predators—and perhaps from prey as well.
That octopuses can survive in the extreme, sunless environments around deep hydrothermal vents is surprising enough. But comparing octopuses that make their homes there has led to some even more interesting discoveries about animal development.The rarely seen Muusoctopus hydrothermalis live some 2,495 to 2,620 meters below the surface, along the East Pacific Rise.
Down in the dark depths of the deep ocean live more than a dozen species of "Dumbo" octopuses.These octopods from the genus Grimpoteuthis are so named for their prominent, unusual earlike fins that they use to help them swim (reminiscent of the Disney elephant character who used his ears to fly).
Today we're returning to the deep to meet an octopus that, at first glance, hardly seems to earn that eight-limbed designation.Its very name sounds like an oxymoron—or a cautionary tale from a fishing accident.
Almost as fast as you can say "go-go-gadget arm," an octopus can stretch its arm more than twice its normal length—without the help of any cyborg attachments.
We continue our exploration of the many mysterious octopuses that live far from shore—and the eyes of humans. Today we meet the blanket octopus ( Tremoctopus ), a genus with four species that, until recently, had only been described based on female specimens.
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