The Goblin shark extends its jaw way out in front of its body, then snaps it back to catch food. The jaw is suspended by ligaments, and not connected to the skull.
Another cool video of a camouflaged octopus. When spotted, the octopus tries to impress the enemy by quickly changing color – mostly white (fear and aggressiveness)). It will also inflate itself to appear bigger, thus more frightening. How cool is that ?
As you may know by now, octopuses can control both their color (thanks to their chromatophores) and their skin structure. The size of their skin projections, calledPapillae is controlled through muscular hydrostat.
A muscular hydrostat is a biological structure mainly made of muscles with little or no skeletal support, which can easily change shape to bend, extend, etc. Some other examples of muscular hydrostats are our tongue and an elephant’s trunk. This is how the octopus can appear smooth, bumpy or spiky at will.
This video is a close-up of the octopus’s papillae. You can clearly see the muscular hydrostats at work, amazing !
It’s Cephalopod Week, and all week we’ll be sharing photos of these miracle mollusks! Today, check out this octopus that Nautilus Live spotted on a recent ROV dive near Olympic Coast National Marine Sanctuary.
We’ve teamed up with the E/V Nautilus to explore the deep habitats of many of our West Coast national marine sanctuaries this summer. Learn more here and watch livestreams of the dives at nautiluslive.org!
An ingenious octopus has been showing off his house-building skills, using bits of trash found on the seabed - a spoon, a flip-flop and some coconut shell.
The clip, filmed off the coast of the Indonesian island of Lombok, shows the crafty cephalopod dragging the items across the ocean floor and then constructing a little hut where he can hide from sharks and other predators.
The critter in question is a coconut octopus (amphioctopus marginatus), a species only discovered in 1964 and named after its habit of finding and using coconuts. This one is only about three inches long, with tentacles about six inches long, which means it can fit quit snugly into a home made of a flip-flop and a coconut shell (source).
Largest octopus gallery > http://www.Instagram.com/octonation
Who wants their photo taken by an Octographer? Tag some friends ;) To promote their water-resistant camera, @Sony recently teamed up with the Sea Life Aquarium in New Zealand to teach an octopus named Rambo to take pictures of visitors from inside her tank. The camera was mounted on her tank “When we first tried to get her to take a photo, it only took three attempts for her to understand the process,” said one of the trainers. “That’s faster than a dog. Actually it’s faster than a human in some instances.” (via @PetaPixel) #octopus #sony
