Tree of Life
Plant Flower, Tree
Invertebrate Cuttlefish, Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
octopus : any of a genus (Octopus) of cephalopod mollusks that have eight muscular arms equipped with two rows of suckers; broadly : any octopod excepting the paper nautilus — Webster
Octopus is a soft-bodied, eight-armed mollusc of the order Octopoda. Around 300 species are recognized and the order is grouped within the class Cephalopoda with squids, cuttlefish and nautiloids. Like other cephalopods, the octopus is bilaterally symmetric with two eyes and a beak, with its mouth at the centre point of the arms (which are sometimes mistakenly called “tentacles”). The soft body can rapidly alter its shape, enabling octopuses to squeeze through small gaps. They trail their eight arms behind them as they swim. The siphon is used both for respiration and for locomotion, by expelling a jet of water. Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviorally diverse of all invertebrates. — Wikipedia
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
- How does it feel to be a bee? The quest to...on February 18, 2021 at 1:57 pm
What is it like to be a bee? Or a spider? Does a crab feel pleasure or pain? Behavioural and welfare science have moved on considerably in the past 20 years, but there is still a huge amount we don't know about how animals actually feel—or, indeed, whether they all do.
- Where did brains come from?on February 15, 2021 at 2:00 pm
Charles Darwin wrote a book called "The Power of Movement in Plants" with his son Francis in which they first identified the root apex as the central command center of plants. In contrast to our own orientation with respect to Earth's gravitational field, Darwin proposed that the root apices represented the anterior cognitive pole of the plant or tree, while the shoot apices represented the posterior pole. In this view, the root apices are solely responsible for identifying and targeting […]
- Moray eels thrive on coral reefs close to...on February 12, 2021 at 12:48 pm
Coral reefs that are in close proximity to larger populations of people tend to have fewer sharks and other fish due to higher fishing pressure. But new research shows there's one group of predators that's the exception—moray eels.
- Much to glean when times are roughon February 1, 2021 at 5:48 pm
Scientists say stable seafood consumption amongst the world's poorer coastal communities is linked to how local habitat characteristics influence fishing at different times of the year.
- Crunch! Underwater acoustics expose...on January 26, 2021 at 3:39 pm
'Shell-crushing'—exactly what it sounds like—is a predatory mode used by numerous marine life from crabs to octopuses to large fishes and mammals when they eat hard-shelled mollusks like clams, oysters and conchs. These predators have to break apart the shell using robust claws or fortified jaws to access the prey's soft tissues.