Hey guys! Today I’m going to be redrawing an old painting of an octopus I did in high school. I’m thinking I’ll change it up a bit and make it resemble a stained glass effect when I’m done. While I’m doing that here’s 8 cool octopus facts you probably didn’t know. Let’s get started. Number one. This first one got me. You may have grown up being taught in school that the plural of octopus is “octopi.” Well did you know that the correct plural form is technically “octopuses?” I didn’t believe it either, but according to many sources, one such being www.infoplease.com “‘Octopuses’ is a perfectly legitimate English plural, and the oldest attested to. ‘Octopi’ is also an acceptable choice, and one in wide use, but you run the risk of being informed that it’s incorrect. Well-meaning people may tell you that ‘octopi’ is a Latin plural, for octopus comes from the Greek. While this is true the word in fact went from Greek to Latin and only then to English. While the plural is irregular, it’s hardly out of bounds. Those who don’t like ‘octopi’ sometimes suggest that the correct term is ‘octopodes.’ Nobody ever uses ‘octopodes’ outside of arguments about the plural of octopus. Nor should you. In short stick with octopuses unless you really prefer the sound of ‘octopi.'” Well my life is a lie. Cheers to the American public school system. They have failed me. Number two. This next one is kind of disturbing. Did you know that an octopus will eat its own arms out of boredom? One study found that when compared with other octopuses… oh that sounds so wrong. The world was simpler when I thought the correct term was ‘octopi.’ Anyway, when compared with other octopuses living in interesting, decorated tanks with lots of coral and shells and such octopuses living a more austere, barren, tanks became really stressed out and began eating their own arms, a behavior known as autophagy. Can you imagine being stressed out to the point that eating your own leg seems like a good idea? Well, maybe finals week is college but- Number 3. Octopuses have venom. All octopuses are thought to have some venom that comes from the bacteria living inside the animals they eat. Don’t worry, though most don’t have enough poison to harm people, but a bite from a small blue ringed octopus can paralyze an adult human in mere minutes. So don’t play with the pretty blue ringed ones kids! Number four. Did you know that octopuses are among a special set of animals observed to use tools? Marine researcher Julian Finn observed an octopus stacking multiple coconut shells and jogging across the seafloor carrying them and using them as mobile homes. Octopuses are notorious for the dexterity in their arms. One octopus, a female Giant Pacific octopus named Billy at the Seattle Aquarium is even able to open child proof pill bottles! Said small children everywhere, “Pfft, no big deal.” Number 5. Did you know that the octopus has three hearts? Two hearts to move blood beyond it’s gills, and one heart to keep circulation flowing for the organs, which actually stops beating when the octopus swims. This explains their preference to crawl as opposed to swimming as it exhausts them. Sounds a bit like me trying to run the mile in gym class. Number six. Speaking of octopus blood did you also know that octopuses actually have blue blood? No they aren’t royalty, their blood is literally blue. To survive in the deep ocean they developed copper based blood called hemocyanin which turns the blood blue. This copper based blood is more efficient at transporting oxygen in cold, low-oxygen environments, but this system also causes them to be extremely sensitive to changes in acidity. If the surrounding waters pH dips too low octopuses can’t circulate enough oxygen. As such researchers worry about what will happen to the animals as a result of climate change induced ocean acidification. So if you want to continue having these amazing creatures around, fight climate change people! Listen to Bill Nye! Climate change is not a myth! Number seven. Now all of an octopuses thinking isn’t done in its brain. About two-thirds of an octopuses brain cells, or neurons, are in it’s arms. This allows the octopus to perform several tasks at the same time. Talk about multitasking! Number eight. You’ve probably seen octopuses make ink clouds in movies before, but did you know this ink doesn’t just help the octopus hide? It also physically harms its enemies. When an octopus sprays its ink at an enemy it causes a blinding irritation and garbles the predator’s sense of smell and taste. This is because of a compound found in their ink called tyrosinase. This compound is so potent that if an octopus fails to escape its own ink cloud, it can die. What a way to go. The same is also true of patrons of Taco Bell. All right, that was 8 octopus facts you probably didn’t know. And look! I’m done with my octopus redraw. If you want you can buy this piece as a print in my Etsy shop, I’ll provide a link in the description. If you liked this video be sure to subscribe for more content and let me know, how do you guys feel about the plural of octopus being octopuses and not octopi? Did you already know, or did you grow up being taught that the correct term is ‘octopi’ like I did? Thank you all so much for watching! Until next time, I’ll see you later!