Friday Cephalopod: Explicit!

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Octopus cyanea

You may be wondering what they're doing. Here's a hint: that's a male below, and a female above. Here's another hint: that's his specialized third arm, the hectocotyl limb. Third hint: it's in her oviduct.

If you can't figure it out yet, look below the fold for an illustration.


Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.


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Octopus cyanea Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.
Octopus cyanea Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.
Octopus cyanea Figure from Cephalopods: A World Guide (amzn/b&n/abe/pwll), by Mark Norman.
Go ahead, count 'em. Since there were some comments about octopuses with an odd number of arms, here's an example. Males of this species have a highly modified arm (the one they use for sex) that is tucked away in a pouch, so they have the appearance of a seven-armed octopus. Haliphron antlanticus…

=)

I smile because I don't know what's going on...

By BlueIndependent (not verified) on 18 Aug 2006 #permalink

Yeesh. Poor guy has to sneak up on her an' everything.

What a typical octoguy! You'd think with eight arms he could spare at least one for foreplay! But no, he just reaches over and sticks his hectocotyl limb right in there.

Feelthy pictures. Octopuses. Cartoons. Science is good.

By Jeff Chamberlain (not verified) on 18 Aug 2006 #permalink

Ok, I'm confused. Here's what I see - correct me where I'm wrong! The male is the dark redish thing at the bottom of the picture. The female looks like a mound of Ghostbuster-style ectoplasm, and is sat on top of a rock, and is biting it with very human-looking teeth (!). The male is stretching up to the female with his 'specialized 3rd arm', and is attempting to swat a pufferfish from her head (or whatever that part of her is). The pufferfish, understandably slightly alarmed by this, has puffed up in response.
Is that about right?

Fisting cephalopods. Now I truly have seen everything. And I wish I hadn't.

Hi, yesterday I jumped into a blog by accident and found a nice Octopus movie.I know of your love for cephalopods so here is the link. I am not sure if it is a real movie, but looks amazing. Unfortunately the contents of the blog are not quite good, maybe good material for more of your posts...
(http://robboss.wordpress.com/2006/08/17/primitive-octopus-eats-shark/)

Eliza,
You're close. It's not a "pufferfish", it's called a "flufferfiish". It's a very specialized species.

birds Do It
bees Do It
...
octopuses Do It (well...yeah...sorta)
...
Australian lungfishes Do It (but not for long)
...

Eliza,
You're close. It's not a "pufferfish", it's called a "flufferfiish". It's a very specialized species.

Dear sweet Jeebus, Alex.

I think I need to wash my brain, now.

I think I need a cold shower right about now...

By DocAmazing (not verified) on 18 Aug 2006 #permalink

I never see any photos or images when I visit your blog. I get to it through the feed, and I'm using Firefox. Is there some setting which is blocking images? The URL I get for this post is http://scienceblogs.com/pharyngula/2006/08/friday_cephalopod_explicit.p….

I enjoy reading your blog. I admire squid and octopi, though not professionally. One of my favorite memories is a close encounter with a squid while snorkeling in the Virgin Islands.

Xris

Yes, there is a security setting in Firefox that blocks media that is not from the same website as the rest of the page.

Go to: Tools,Options,Content
The checkbox "Load Images from originating website only" shouldn't be checked.

Hmmm ... I have "Load images" enabled, but NOT "for the originating Web site only." I think it's a page-rendering problem. For example, I can see the caption Octopus cyanea at the top of the article. The HTML for the caption only has this:

Octopus cyanea

There's no tag in the HTML, hence no image.

Sorry about that. I need to encode the HTML. Let's try it this way:

<div class="captionedfigure"> <br /><i>Octopus cyanea</i></div>

That's very weird. There is an image tag in there, really there is.

I've jiggered some of the parameters in the tag a little. Tell me if it works for you now.

Hey - both the photo and the, um, educational comic are showing up in IE today!

I'll check in again later tonight with FireFox and see if it shows up there.

I'm having the same issue in Firefox, and I don't have any weird settings that I know of, either.

By Austin Sipes (not verified) on 21 Aug 2006 #permalink

Firefox -- use the Advanced button to the right of the Load Images area.
Paste in http://scienceblogs.com/pharyngula/ and click 'Allow'
I don't know why sometimes you need to explicitly allow it, but it can solve the problem regardless of how your other options are set.