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Most types of octopuses can change their colors and their shapes, allowing them to hide in plain sight.īut the Caribbean reef octopus takes this to another level, rapidly changing its color, patterns, and skin texture to fool other species. Caribbean Reef Octopus ( Octopus briareus) It’s also pretty brutal during mealtimes, as it feeds by drilling into crustacean shells and injecting them with poisonous saliva. The Atlantic pygmy octopus has been observed using sand and shells to camouflage itself.

The Atlantic pygmy is only 5 or 6 inches long, making them one of the smallest types of octopus on this list.īut don’t let their tiny size fool you, as they are incredibly intelligent. Atlantic Pygmy Octopus ( Octopus joubini) They are not dangerous to humans and cannot be kept as pets because they are deep-water octopi and wouldn’t survive in a home aquarium. Most dumbo octopuses are small but some can grow to over 5 feet. The term “dumbo octopus” is used to define a group of octopuses that have large fins, just like Dumbo’s ears.ĭumbo octopuses live at around 13,000 feet, deeper than the other types of octopus on this list. They use their natural camouflage to aid with this and can also change shape and squeeze into small crevices. In addition to the above, there are believed to be at least half a dozen other blue-ringed octopus species still being researched and classified.īlue-ringed octopuses spend a lot of their short lives (between 2 and 3 years) hiding away.

Hapalochlaena Nierstraszi: A type of blue-ringed octopus first described back in 1938.

It has an all-over yellowish-brown color with dark blue streaks.

Blue-Lined Octopus: A small Cephalopod that is common in Australia and can also be found around Japan.

Lesser Blue-Ringed Octopus: Also known as the southern blue-ringed octopus, the lesser blue-ringed is commonly found in Australian rock pools and can grow up to 20 centimeters.

The name stems from the large blue rings.

Greater Blue-Ringed Octopus: Contrary to what its name might suggest, the body of the greater blue-ringed octopus is usually just 10 centimeters and weighs less than 80 grams.

There are four confirmed blue-ringed octopus species: If provoked they can release a deadly toxin known as tetrodotoxin.įans of weird ocean creatures (and The Simpsons) will recognize it as the same toxin found in the liver of the pufferfish (fugu!). The blue-ringed octopus is a beautiful yet terrifying creature that is sure to trigger some trypophobic reactions.Īnd that’s good, as it means your brain is working because if you see this octopus then you need to get the hell out of the water!īlue-ringed octopuses are venomous and actually rank among the world’s most deadly marine life. The other two are smaller “branchial” hearts, which are located next to the gills and supplement the main heart. One of these is its “main” heart and pumps oxygenated blood throughout its body. How Many Hearts Does a Common Octopus Have? Many animal rights activists have campaigned against this practice, arguing that they are highly intelligent and emotional creatures and that such practices are cruel. It lives for just 1 or 2 years in the wild and while thousands are caught and eaten every year (the common octopus is the most popular octopus caught for its meat), it’s not considered endangered or threatened.ĭemand for octopus meat is increasing and some companies are responding by researching into octopus farms. This octopus species can grow to a few feet in length and 20 pounds in weight.

Red octopus crack#

It uses its tough beak to crack mollusk shells and access the nutritious meat inside. The common octopus hunts by blending in with its surroundings, waiting for unsuspecting prey to pass, and then pouncing. It is the most studied of all Cephalopoda and survives on a diet of crayfish, crabs, and other crustaceans, although in truth, it will eat anything that it can.

You can even find these little guys along the southern coast of the United Kingdom.

The common octopus lives in temperate, subtropical, and tropical waters and can be found everywhere from the coasts of South Africa to the eastern Atlantic. The common octopus, as the name suggests, is one of the most abundant octopuses and the one that most people picture when they think about these creatures. California Two-Spot Octopus (Octopus bimaculoides).Coconut Octopus (Amphioctopus marginatus).East Pacific Red Octopus (Octopus rubescens).The Seven-Arm Octopus (Haliphron atlanticus).Giant Pacific Octopus (Enteroctopus dofleini).Caribbean Reef Octopus (Octopus briareus).Atlantic Pygmy Octopus (Octopus joubini).How Many Hearts Does a Common Octopus Have?.