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.
- Examining the food chains controlling invasive...on July 21, 2021 at 2:32 pm
A landmark scientific study involving marine biologists from Greece, Turkey, Cyprus, Libya, Italy, Tunisia, the UK, the US and Malta documenting instances where native Mediterranean species have preyed upon two highly invasive marine fish—the Pacific red lionfish and the silver-cheeked toadfish—has just been published. Prof. Alan Deidun, coordinator of the Spot the Alien Fish citizen science campaign and resident academic within the Department of Geosciences of the Faculty of Science, is a […]
- Scientists explore seamounts in Phoenix Islands...on July 9, 2021 at 2:41 pm
Marine scientists aboard Schmidt Ocean Institute's research vessel Falkor have identified likely new marine species and deep sea organisms on nine seamounts that were explored for the first time in the remote Phoenix Islands Archipelago. In a 34-day expedition that ended today, scientists also conducted high-resolution seafloor mapping of more than 30,000 square kilometers and video exploration of five additional seamounts.
- Suckers for learning: why octopuses are...on July 7, 2021 at 1:10 pm
Our last common ancestor with the octopus existed more than 500 million years ago. So why is it that they seem to show such peculiar similarities with humans, while at the same time appearing so alien? Perhaps because despite their tentacles covered with suckers and their lack of bones, their eyes, brains and even their curiosity remind us our own thirst for knowledge.
- Diversity of tiny bobtail squid driven by ancient...on June 29, 2021 at 1:38 pm
Bobtail and bottletail squids are small marine invertebrates that are easy to collect, reproduce quickly, and can be raised together in large numbers in laboratories, making them useful model animals for research. They're cephalopods—related to true squid, octopus, and cuttlefish, which are renowned for their intelligence and complex behaviors, but of which scientists still know little. Now, in a new study, published in Communications Biology, researchers have used genetic techniques to show […]
- Pollutant concentration increases in the...on June 14, 2021 at 8:09 pm
The concentration of potentially toxic metals is increasing in the population of the franciscana dolphin—a small cetacean, endemic to the Rio de la Plata and an endangered species— according to a study led by a team of the Faculty of Biology and the Biodiversity Research Institute (IRBio), published in the journal Science of the Total Environment.