Entries Tagged "squid"

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Friday Squid Blogging: Squid Skin–Inspired Insulating Material

Interesting:

Drawing inspiration from cephalopod skin, engineers at the University of California, Irvine invented an adaptive composite material that can insulate beverage cups, restaurant to-go bags, parcel boxes and even shipping containers.

[…]

“The metal islands in our composite material are next to one another when the material is relaxed and become separated when the material is stretched, allowing for control of the reflection and transmission of infrared light or heat dissipation,” said Gorodetsky. “The mechanism is analogous to chromatophore expansion and contraction in a squid’s skin, which alters the reflection and transmission of visible light.”

Chromatophore size changes help squids communicate and camouflage their bodies to evade predators and hide from prey. Gorodetsky said by mimicking this approach, his team has enabled “tunable thermoregulation” in their material, which can lead to improved energy efficiency and protect sensitive fingers from hot surfaces.

Research paper.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

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Posted on April 22, 2022 at 4:04 PMView Comments

Friday Squid Blogging: Do Squid Have Emotions?

Scientists are now debating whether octopuses, squid, and crabs have emotions. Short answer: we don’t know, but can’t rule it out.

There may be a point when humans can no longer assume that crayfish, shrimp, and other invertebrates don’t feel pain and other emotions.

“If they can no longer be considered immune to felt pain, invertebrate experiences will need to become part of our species’ moral landscape,” she says. “But pain is just one morally relevant emotion. Invertebrates such as octopuses may experience other emotions such as curiosity in exploration, affection for individuals, or excitement in anticipation of a future reward.”

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

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Posted on April 8, 2022 at 4:12 PMView Comments

Friday Squid Blogging: Squid Migration and Climate Change

New research on the changing migration of the Doryteuthis opalescens as a result of climate change.

News article:

Stanford researchers have solved a mystery about why a species of squid native to California has been found thriving in the Gulf of Alaska about 1,800 miles north of its expected range: climate change.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

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Posted on April 1, 2022 at 4:06 PMView Comments

Friday Squid Blogging: Unexpectedly Low Squid Population in the Arctic

Research:

Abstract: The retreating ice cover of the Central Arctic Ocean (CAO) fuels speculations on future fisheries. However, very little is known about the existence of harvestable fish stocks in this 3.3 million­–square kilometer ecosystem around the North Pole. Crossing the Eurasian Basin, we documented an uninterrupted 3170-kilometer-long deep scattering layer (DSL) with zooplankton and small fish in the Atlantic water layer at 100- to 500-meter depth. Diel vertical migration of this central Arctic DSL was lacking most of the year when daily light variation was absent. Unexpectedly, the DSL also contained low abundances of Atlantic cod, along with lanternfish, armhook squid, and Arctic endemic ice cod. The Atlantic cod originated from Norwegian spawning grounds and had lived in Arctic water temperature for up to 6 years. The potential fish abundance was far below commercially sustainable levels and is expected to remain so because of the low productivity of the CAO.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Read my blog posting guidelines here.

Posted on March 25, 2022 at 4:07 PMView Comments

Friday Squid Blog: 328-million-year-old Vampire Squid Ancestor Discovered

A fossilized ancestor of the vampire squid—with ten arms—was discovered and named Syllipsimopodi bideni after President Biden.

Here’s the research paper. Note: Vampire squids are not squids. (Yes, it’s weird.)

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Read my blog posting guidelines here.

Posted on March 11, 2022 at 4:01 PMView Comments

Friday Squid Blogging: Squid Videos

Here are six beautiful squid videos. I know nothing more about them.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Read my blog posting guidelines here.

EDITED TO ADD (2/25): This post accidentally went live on Wednesday, two days early, and people started adding their comments then. I have changed the posting date to the correct one, which means that the comments existing before that time will appear to have been made before the post. I apologize for the confusion.

Posted on February 25, 2022 at 4:00 PMView Comments

Friday Squid Blogging: South American Squid Stocks Threatened by Chinese Fishing

There’s a lot of fishing going on:

The number of Chinese-flagged vessels in the south Pacific has surged 13-fold from 54 active vessels in 2009 to 707 in 2020, according to the SPRFMO. Meanwhile, the size of China’s squid catch has grown from 70,000 tons in 2009 to 358,000.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Read my blog posting guidelines here.

Posted on February 18, 2022 at 4:12 PMView Comments

Sidebar photo of Bruce Schneier by Joe MacInnis.