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Vampire Squid And The Evolution Of Cephalopod Sex

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Squid Lady Parts

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Danna StaafRSS Feed of this column.

Cephalopods have been rocking my world since I was in grade school. I pursued them through a BA in marine biology at the University of California, Santa Barbara, followed by a PhD dissertation at... Read More »

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A lot of the ships fishing for squid off the Americas come from China, Korea, and Japan. If they're willing to cross the Pacific to feed their squid habit, you can bet they're not overlooking the resources in their own backyard. 

Squid fishing is a huge industry in Asia--and, as always, it's a bit tricky to divvy up the catch. 
Going Ad-Free

Going Ad-Free

Oct 21 2011 | comment(s)

I have a love/hate relationship with advertising. Ads are specifically designed to manipulate people, and I hate being manipulated. On the other hand, I love using free services that are supported by ads.

Science 2.0, as you may have noticed, runs ads, and I've got no problem with that. In fact, those ads make me anywhere from $3 to $10 a month--which isn't really enough to feed my ice cream habit, though it's a worthy contribution.

But the video ads were getting a little too intrusive, according to both my own experience and comments from you, dear readers. I mentioned this to Mr. Science 2.0 himself, and learned I could opt out of ads on my blog by forfeiting future accumulation of my ice cream allowance. Done and done! 
Times are tough all over. But did you know that the Atlantic longfin squid is doing its part to help the economy?

In an article by Kirk Moore of Asbury Park Press about the decline of river herring in New Jersey, I learned that river herring spend months feeding in the open ocean. While they're stuffing their faces, they sometimes get accidentally caught, killed and discarded as bycatch. Local authorities are considering restrictions to reduce this loss . . .
Here at Squid A Day, we are all about the cephalopods. Specifically, the decapod cephalopods, the ones with ten appendages (eight arms and two tentacles). That's my tenuous excuse for veering off in an entirely different phylogenetic direction this evening . . .

You see, decapods are also a branch of crustaceans--all your friendly ten-legged crabs and lobsters. And crustaceans are arthropods. And the most awesome arthropods are undoubtedly the eurypterids. They're extinct now, but they once grew larger than humans. How is that not awesome?
On October 8th, Octopus Day, I wrote about the incredibly strange Seven-arm Octopus, Haliphron atlanticus. I invoked its tremendous size, irregular arms, habitat flexibility, and peculiarly small body as proof positive of its weirdness.

But I didn't provide very satisfying pictures. 

Today I am here to fill that gap with a couple of beautiful photographs taken by Nan Hauser, director of the Cook Islands Whale Research Project. 
In an obituary for biologist Robert Clarke published recently in Marine Mammal Science, I read a rather curious passage about this scientist's observations of Humboldt squid: