“頭足類週間”につき全米の水族館や頭足類好きが #CephalopodWeek のタグでとっておきのタコ＆イカ画像をシェア

Oceana @oceana

Meet the octopus that can mimic other animals. #CephalopodWeek pic.twitter.com/c1DsPj7COw

Keishu Asada @CephWarden

Another slow-motion video. A baby Sepia pharaonis (Pharaoh Cuttlefish) pretends to be a crab, attempts to grab a mysid shrimp, then... #cephalopodweek #cephalopod #cuttlefish #cute #slowmotion @scifri @TheOctoNation pic.twitter.com/zyobWeWcO9

Oceana @oceana

Love octopuses? Celebrate #CephalopodWeek with a symbolic octopus adoption! All donations go toward making our world's oceans healthier and safer, for generations to come. bit.ly/2N0PFWh pic.twitter.com/rCKyLDYv8m

Joschua Knüppe @JoschuaKnuppe

Highlights from the cephalopod #paleostream! Placenticeras, Vampyranassa, Diplomaceras and Araxoceras. #paleoart #sciart #CephalopodWeek #art #ammonites pic.twitter.com/jZukRJlU2i

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Oceana @oceana

Don't mess with the striped pyjama squid! It has small glands under its body that release toxic slime that is dangerous to passersby. Learn more about these curious creatures for #CephalopodWeek in our encyclopedia: bit.ly/2FoWqLg pic.twitter.com/jua84nEp6H

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Gavan M Cooke @GavanCooke

is this the moment when a #cuttlefish wakes up? Quite possibly, based on the observations we have recorded over the hour they were watched. Taken by @Subseatv #CephalopodWeek pic.twitter.com/KsGpE9I0Z9

Monterey Bay Aquarium @MontereyAq

This makes all three of our hearts happy as a clam ❤️🐙❤️ #CephalopodWeek pic.twitter.com/aag9J4W0iR

Oceana @oceana

The vampire squid is neither squid nor octopus (or vampire). It is in its own group in the cephalopod family and gets its name from its webbed arms that resemble a cape. Learn more: bit.ly/2Iu9WiO #CephalopodWeek pic.twitter.com/O2LAlL9bAs

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MBARI @MBARI_News

We feel it's our duty to drop some daily ceph-knowledge during #cephalopodweek. So here's Japatella diaphana, one of the cutest inhabitants of the midwater. It's actually an octopus, although it looks more like a squid. And it never touches the seafloor (unlike most octopuses!). pic.twitter.com/YRP3JGCTXE

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OctoNation® The Largest Octopus Fan Club 🐙 @TheOctoNation

Now THIS is how you cephalo-brate for #CephalopodWeek - All eyes on @EckmanRyan's cuttlefish attire during the #coneyisland #MermaidParade - what do ya think?! pic.twitter.com/vhF3uyox0f

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Oceana @oceana

Meet the deepest-dwelling octopus! #CephalopodWeek Footage via @EVNautilus pic.twitter.com/z5mlV3toDc

Oceana @oceana

Running away from #Monday like a coconut octopus... #CephalopodWeek pic.twitter.com/FJZ9lteiGC

Oceana @oceana

The chambered nautilus is the only cephalopod that has an external shell. But these beautiful ocean creatures could be headed toward extinction. This #CephalopodWeek, add your name to save the Endangered Species Act and #StopExtinction: bit.ly/31FPLpA pic.twitter.com/fzfYhSLpx8

Smithsonian Channel @SmithsonianChan

Mondays can be rough. But #CephalopodWeek gives us all the motivation we need to power through! bit.ly/2Xshdbd pic.twitter.com/y4UvNlju2m

Sarah McAnulty, Ph.D @SarahMackAttack

It is time to teach you "Head shoulders knees and toes"... Squid style. 🎶🎶 ARMS, EYEBALLS, BUTT BRAIN GUTS BUTT BRAIN GUTS! ARMS, EYEBALLS, BUTT BRAIN GUTS BUTT BRAIN GUTS! CELLS THAT CHANGE COLORS IT'S NUTS ARMS EYEBALLS BUTT BRAIN GUTS BUTT BRAIN GUTS! 🎶🎶 #CephalopodWeek pic.twitter.com/Sfjo5wan7i

High Seas Science @RebeccaRHelm

Blanket octopus females like this one are 10,000 times larger than males, which are no bigger than the pupil of her eye. More incredible facts+amazing video in my new blog post: jellybiologist.com/2019/06/24/six… Photo by: Jinggong Zhang bit.ly/2WXkjjf #DailyJelly #CephalopodWeek pic.twitter.com/T96Dn9BRjC

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Oceana @oceana

Meet the stubby squid. 👀 #CephalopodWeek Footage via @EVNautilus pic.twitter.com/A6isfIH23d

Dr. Crissy Huffard @Mucktopus

There's nothing quite like watching cephalopods in their natural habitat and you don't have to leave home to do it. Youtube is rich with cephalopod videos shared by #divers and #snorkelers from all over the world. #CephalopodWeek #fieldwork #octopus #cuttlefish @cephs @MBARI_News pic.twitter.com/etJGGBB0F5

California Curated @ScienceWeekly

Today's edition of #cephalopodweek we bring you another broadclub cuttlefish (Sepia latimanus) in Indonesia. Watch how fast he can change color to white, using cells called leucophores and iridocytes. Likely changing color as a response to my camera light being so close. @scifri pic.twitter.com/5RpWvG2mcl

Keishu Asada @CephWarden

A deadly darling - the blue ring octopus. I can't believe how cute they are, but don't let them give you a kiss. #cephalopodweek #cephalopod #octopus @TheOctoNation @cephs @scifri @SarahMackAttack pic.twitter.com/hPsHRWI1d2

Monterey Bay Aquarium @MontereyAq

Loving all of the cephalobrations, but not quite sure of the correct way to talk about a couple of octopuses for #CephalopodWeek? Don’t worry, we’re suckers for a good etymology story: pic.twitter.com/kDazJ5oPDZ

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Oceana @oceana

A camouflaged Caribbean reef octopus can be nearly impossible to see! As one of the most intelligent known invertebrates, this octopus can rapidly change color & skin texture to blend in with its surroundings & avoid detection. Learn more: bit.ly/2RxqKsf #CephalopodWeek pic.twitter.com/qtxQWlC6Fo

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Field Museum @FieldMuseum

Meet the octopus squid. 👋 Why is a squid named after an octopus? The adults have eight arms, like octopuses. But as newly hatched squids, they're born with 10 limbs and the two tentacles degenerate during growth. 🦑‼️ #CephalopodWeek pic.twitter.com/JKGePMQWGr

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California Curated @ScienceWeekly

Another #cephalopodweek video. A lovely flamboyant cuttlefish (Metasepia pfefferi ) we filmed in Indonesia. Known as the "flamenco dancer of the cuttlefish world" it is poisonous rather than venomous (venomous=bite or sting). Cool note: @MontereyAq raises them. @scifri pic.twitter.com/T9LeIt0KRI

Oceana @oceana

It's #CephalopodWeek! But do you know what a cephalopod is? pic.twitter.com/yd2cS003J0