10 Interesting Octopus Facts

10 Terrific Facts about Octopuses
10 Interesting Octopus Facts photo by: Cherilyn Chin

10 Interesting Octopus Facts

1. The preferred plural of “Octopus” is “Octopuses” by cephalopod and octopus lovers.

2. Octopuses are considered the earth’s most intelligent invertebrate. They are also very dexterous, and can be taught to unscrew the lid to a jar to get food inside! (I’ve actually done it!)

3. Due to having no bones and being an invertebrate, a Giant Pacific Octopus can fit through a 2 inch hole (which is the size of its beak or mouth).

4. Octopuses are masters of camouflage-not only can they match the pattern of the background they are on, but they can change texture too (Amazing octopus camouflage video here).

5. Octopuses have 3 hearts and blue-green blood.

6. A octopus not only feels with the suckers on its 8 arms, but it also tastes with its suckers too!

7. An octopus’ 8 arms move independently of its brain.

8. Most species of octopus are nocturnal (sleep during day, active at night) but some species like the Day Octopus (Octopus cyanea) are awake during the day.

9. The largest octopus on record was a Giant Pacific Octopus that weighed 600 pounds (272 kg) and arm-to-arm span was 30 foot wide (9m).

10. There are 300 species of octopuses ocean-wide.

For more on the octopuses’ cousins, the cephalopods see:
Meet Shelley the Chambered Nautilus

Vampire Squid: I’m No Vampire, I’m Not Even a Squid!

First Video Filmed of a Giant Squid in the Ocean

Ollie the Octopus on International Cephalopod Awareness Days and the State of the Oceans

Ollie the Octopus
Ollie the Octopus (photo by Cherilyn Chin)

Wow, it’s already International Cephalopod Awareness Days again! (see my post from last year’s Octopus Day about the Great Pacific Garbage Patch

Here are the Cephalopod Awareness Days we are celebrating: October 8 is Octopus Day (my favorite!), October 9 is (Chambered) Nautilus Day, October 10 is Squid and Cuttlefish Day, October 11 is Myths and Legends, and October 12 is Fossils and Extinct Species (Vampire Squid fit here as “living fossils”, they have been in the news lately, perhaps you have heard that they eat feces and corpses in the deep sea?)

In honor of Octopus Day, I thought I would go over the “State of the Oceans.” Since I’m no orator (I have no vocal cords), you’ll have to settle for my thoughts.

Right now there are 3 major issues facing the ocean today:

1. Global Warming
2. Pollution
3. Overfishing

Whether or not you believe global warming is currently happening, or that it is humans that are causing it, the effects of global warming have been shown over geologic time (i.e. longer than humans have inhabited the earth). Global warming causes seawater temperatures to rise, which can have devastating effects on all wildlife, especially on corals. For more on coral bleaching see my last post.

Due to global warming, sea level rises faster than usual due to the melting of the polar ice caps. Ocean acidification occurs because of all the extra carbon dioxide that the ocean absorbs, and it causes seawater to become more acidic (like soda or orange juice). It mainly affects those animals that have calcium carbonate skeletons, especially the plankton at the bottom of the food chain. For more on that read Terry the Pteropod’s post on ocean acidification.

Pollution comes in many forms, including chemical (like fertilizer runoff and industrial waste), and physical (like garbage or silt). Garbage is the most insidious form of pollution in the oceans. It consists mainly of plastic in all shapes and forms. Plastic never biodegrades, and all the plastic that has ever been produced is still around today (unless it was incinerated). For more, read my previous post on the Great Pacific Garbage Patch.

Overfishing is happening all around the world in all the world’s oceans. Every single country that fishes is catching more fish than can be replaced by the birth rate of new fish. This means that most marine animals eaten as seafood are being fished unsustainably! For more information on overfishing, please watch the documentary The End of the Line.

Once again, I’m out of time. I’ll be back soon to discuss more pressing ocean issues. Please hug a cephalopod today! Or at least abstain from eating us or buying our shells (see Shelley the chambered nautilus’ post), thank you!!

Ollie the Octopus on Coral Bleaching & the Great Barrier Reef

Octopus
Ollie the Octopus (photo by Cherilyn Chin)

Ollie the octopus here. I’m back to talk about more pressing problems that our oceans are facing. I previously covered ocean acidification and the
Great Pacific Garbage Patch.

Today I wanted to discuss a recent study I was told about (I’m may be smart, but I still can’t read!). This scientific study concluded that in past 30 years, half of the Great Barrier Reef (off of Australia) is gone. While I live on the same small patch of coral reef inside my cozy den, I still need live coral reefs to house and attract the food I eat!

Why did the Great Barrier Reef die? There are many reasons why, including:

1. Tropical cyclones
2. Crown-of-thorn starfish
3. Pollution
4. Coral bleaching

Coral bleaching is when the symbiotic photosynthetic zooanthellae living in corals expel themselves. They essentially commit suicide. These zooanthellae are very important to the corals, as in return for shelter, they produce food (like plants on land) for the coral. Without the zooanthellae, the corals are more likely to starve to death and die (bleach).

What causes the zooanthellae to die? The most likely culprit is a rise in seawater temperature due to global warming. So what can be done to keep the coral from bleaching? The most important thing humans can do is reduce the carbon dioxide emissions that cause global warming.

The good news is that some scientists are trying to revive bleached coral reefs by implanting live coral fragments onto them. Scientists have also attracted new coral growth to many bleached areas by running low-voltage electricity through a metal grid.

Why are coral reefs important? They are one of the most biologically diverse ecosystems on earth. In fact, 1 in 4 fish found in the ocean lives on a coral reef! And coral reefs only cover 0.1 percent of the earth’s surface!

I’m out of time, so I will cover the other culprits of coral bleaching another day. Ollie the octopus, signing off.

Articles to read:
Half of Great Barrier Reef Lost in Past 3 Decades
Low-Voltage Electricity Reviving Sick Coral Reef

Ollie the Octopus on Octopus Day and the Great Pacific Garbage Patch

Ollie the Octopus
Ollie the Octopus (photo by Cherilyn Chin)

Hi, my name is Ollie and I’m an octopus.  I am excited to hear that October 8 is Octopus Day during International Cephalopod Awareness Days (October 8-10).  I’m glad we’re getting the recognition we deserve, as we’re usually portrayed as villains (or villainesses) or as cute baby toys with our mouths underneath our eyes. Our mouth is actually underneath our head, and in the center of our circle of 8 arms.

I wish I could have compassion (like humans!) for the other life forms in the sea, but in order to survive I only think about myself.  I need avoid being eaten, find enough food to eat every day, and defend my den.  Since I don’t know my birthday and a calendar doesn’t fit inside my modest sized lair, I think Octopus Day is a good time for me to reflect on my life, or rather the state of the oceans.

It’s looking pretty bleak out there because due to global warming there is a rise in seawater temperature, rising sea levels, ocean acidification (see previous post from me and Terry the Pteropod), and coral bleaching.  There is pollution from land runoff, overfishing (see post Great White Shark’s Adventure), oil spills, and growing garbage patches in all the world’s oceans.

The most well known is called the “Great Pacific Garbage Patch,” which is a fancy name for a whole lot of crap thrown into the ocean by humans. Most of this garbage is plastic, which will never biodegrade. In fact, all the plastic ever manufactured is still around today, unless it was incinerated. I do know an octopus who lives in a glass beer bottle, but plastic isn’t useful to any denizen of the ocean I know of.  In fact, most sea life ingest tiny bits of plastic, as well as plastic chemical by-products, which bioaccumulate on up the food chain until you (or the 10% of sharks, large predatory fish or marine mammals left in the oceans) eat us.  Yuck!  Sea turtles mistake plastic bags for jellies, and albatrosses and other sea birds become entangled in plastic when they try to dive for fish.

So my wish this Octopus Day is that you reduce the amount of plastic you buy, recycle what you do buy, and use a reusable water bottle.  Unless you’re one of the one billion persons on this planet who do not have access to clean drinking water (my guess you wouldn’t be reading this if you are), tap water or filtered tap water is fine!!  I wish I could filter the water I live in…

Ollie the Octopus and Ocean Acidification Definition

Octopus
Ollie the Octopus (photo by Cherilyn Chin)

Meet Ollie the Octopus and learn the ocean acidification definition

Hello, my name is Ollie, and I’m an Octopus.  I will give the ocean acidification definition shortly! Welcome to my blog entry, told from the point-of-view of an octopus.  I am ecstatic to have found myself a human translator (or is she an octopus translator??) named Cherilyn.  I chose a blog to get my thoughts and feelings across as I will only live to be 2-3 years old at most and it is very urgent that I share the many changes happening to my watery world now!

Ocean Acidification is due to Global Warming

My human translator recently told me about a documentary she watched, “A Sea Change,” which is about ocean acidification due to global warming.  All I could think was eek, my beak (mouth) and radula (teeth) will start to dissolve soon and they don’t make dentures for octopuses!  Also within a few octopus generations (and definitely within your human lifetime), my coral reef may be dead.  Yes, the corals that pre-date humans by thousands of years will be gone in a blink of geologic time.  Sure the earth and her oceans over millions of years can deal with the rise of temperatures in both the atmosphere and ocean, but ocean acidification may be the straw that broke the camel shrimp’s back. 

Ocean Acidification Definition

The ocean acidification definition is that all the little animals and plants that build up the massive coral reefs (which are visible from outer space!) will be gone if the saltwater they live in becomes more acidic and dissolves their calcium carbonate skeletons.  My favorite foods, crabs and shrimps, will be gone if they can no longer make their exoskeletons.  No longer will my worst nightmares consist of the “baby octopus bowls” served at Japanese restaurants.  No, it will be that I have no food to eat, and to boot, no place to live!

Stop destroying my ocean!

One in four ocean creatures lives on a coral reef and I believe there isn’t a more beautiful and productive place on earth.  In fact my human translator called coral reefs “heaven in the ocean” after a SCUBA dive in the South Pacific.  From what I’ve heard, due to industrialization, humans have caused massive destruction to the beautiful land all across the earth by exploiting her once plentiful resources.  I’m not looking forward to what humans can do to the oceans, nor can I ignore what they already have done. 

No part of the once thought of massive, untouchable and exotic oceans are left unscathed by the reaches of man.  There is no pristine anything anymore—from pollution caused by runoff from the land, to carbon dioxide and other chemicals spewed into the air that eventually make their way into the oceans (oceans cover more than 70% of the so called “earth”), to the overfishing of large predatory fish.  But increasingly (and supposedly) efficient methods of fishing are wiping out entire schools of both small and large fish in a blink of an eye and leaving nothing but millions of fish scales to sink to the bottom of the ocean forever.  Don’t get me started about the coral bleaching due to global warming, as seeing dead patches of coral really makes me want to really ink someone! 

In conclusion:

I’m glad I only live a few years at most.  If I successfully reproduce, I hope my offspring will have a healthy coral reef to live on, and food to eat.  I hope for your human offspring’s sake they don’t ask someday, “why are there no more coral reefs in the ocean? Or more importantly, “why didn’t you do anything to stop the destruction of the coral reefs?” 

You Can Help!!

Fortunately there is still time, and there is still hope.  Although only 1% of all the money donated to conservation causes is ocean related, you can make a difference one cent and one dollar at a time.  It costs nothing to sign on-line petitions, e-mail your local Senators or Representatives or to just to stay informed (follow my human interpreter on twitter @protectoceans or visit protecttheoceans.org.  Tell just one person what you’ve learned today and hopefully someday your grandchildren, after peeking underwater at a coral reef for the first time, or seeing a whale surface and spout in the ocean, will thank you for helping to protect the oceans and its inhabitants from destruction by mankind.

More from Ollie the Octopus:Ollie the Octopus on International Cephalopod Awareness Days and the State of the Oceans

Ollie the Octopus on Coral Reef Bleaching and the Great Barrier Reef

Ollie the Octopus and the Great Pacific Garbage Patch