The octopus is a mollusk and an invertebrate, which means it doesn’t have any bones. The cephalopods are a subspecies of mollusks that includes the octopus. Since an octopus’ “feet” are attached to its head, this name literally means “head to foot.”
The octopus can only survive in salt water, but it can be found in all oceans. Warm-water octopuses are usually tiny in size. The ones that live in colder water are significantly larger. The octopus lives for one to two years.
There are approximately 300 species of octopus described.
The octopus’s body resembles a bag. It also has an eight-armed body, a bulbous head, and wide eyes. The octopus’ arms have suckers on them. The octopus’ arms also have a lot of nerves that allow it to catch and taste items.
While the octopus has excellent vision, it has poor hearing (between 400Hz and 1000Hz). Three hearts make up the octopus. An octopus’ blood is a light blue color.
The octopus is thought to be the smartest of all invertebrates. The octopus’ mouth is surrounded by a beak.
While the average octopus is much smaller, it can grow to be around 4.3 feet (1.3 meters) long and weigh up to 22 pounds (10 kilograms). The Giant Pacific Octopus, the world’s largest octopus, lives in the coastal waters of British Columbia. The biggest one captured weighed 600 pounds and had a 33-foot tentacle width.
It takes about a month for a female octopus’ eggs to develop and hatch after she lays them. The female is constantly on the lookout for her potential offspring. Since she isn’t hunting during this period, the female is prone to being extremely weak and dying of malnutrition about the time her young hatch. Since they spend very little time with their parents, young octopuses learn so little from them.
When the octopus breathes, the octopus’s body moves. The octopus travels by pulling water through a tube out of its body. The octopus would be thrown backwards by the force of the water. They can push water out of this tube with great force if they are attacked by a predator, almost as if they had jet propulsion. The octopus can also defend itself by squirting an inky material at a predator, blinding it for a short time. The ink also dulls the predator’s sense of smell, making it more difficult to locate the escaping octopus. The octopus also has the ability to blend in with its surroundings, allowing it to hide from predators.
The octopus’ body can even pass through very small gaps, allowing them to flee a potentially dangerous situation. If trapped, the octopus will give up one of its arms to the predator and then regrow it.
The octopus also has beak-like jaws that are capable of biting. The octopus’ saliva is toxic because it contains venom.
Some octopi will gather crustacean shells and other items to build fortifications, or “gardens,” around their lairs. Crabs, crayfish, and mollusks are among the octopus’ prey, and they will often use their ink to confuse their prey before attacking. They primarily hunt at night.
Octopi are excellent problem solvers and can often find out how to get out of even the most safe fish tanks. They’ve also been known to climb onto fishing boats and open the holds in order to eat crabs. Because of their beauty and small size, the blue-ringed octopus is one of the most common species in home aquariums. They’re also one of the world’s most poisonous creatures! The venom of the blue-ringed octopus can destroy a person even though it is just the size of a golf ball.