Colossal Squid (Mesonychoteuthis hamiltoni) anatomical diagram

(Via Templesmith, via F**k Yeah, Tentacles)

If you want to see the original full-length presentation, you can find it here.

Via Laughing Squid and BoingBoing.

I know I’ve let this blog languish a bit recently, and I thank you for sticking with me. Over the past few months I have collected literally hundreds of links to cool examples of cephalopod art, photography, and miscellaneous awesomeness. Over the next week or so, I plan to flood your RSS reader with a veritable swarm of new posts (although I guess “shoal” might be a more biologically apt term). I also haven’t forgotten about the Architeuthis Across America project…I just need to get my house in order first.

This amazing animation showing how Physeter macrocephalus uses echolocation to hunt, is from the Whales Tahora exhibit now at the Museum of New Zealand Te Papa Tongarewa. The Sperm Whale starts out hunting boring old fish, but don’t worry, he meets an delicious Architeuthis by the end of the clip!

(Via rhamphotheca)

Mimic Octopus at Aer_Parang, originally uploaded by Stephen Childs.

The fascinating Thaumoctopus mimicus, filmed at Aer Parang (Indonesia?).

We interrupt Plush Week to bring you this awesome video by the Monterey Bay Aquarium Research Institute (MBARI). I’m virtually certain that the first few are Humbolt Squid (Docidicus gigas), but can anyone identify the rest?

(Tip o’ the tentacles to Pharyngula and Deep-Sea News)

UPDATE!

In the comments, Linda Kuhnz from MBARI comes to the rescue. She says…

The squids featured in this video were filmed in Monterey Bay (except for the Piglet Squid, which was filmed in the Gulf of California) at depths ranging from 980 to 3,150 feet.

A) Black-eyed Squid (Gonatus)
B) Humboldt Squid (Doscidicus gigas)
C) Swordtail Squid (Chiroteuthis)
D) Market Squid (Doryteuthis opalescens)
E) Cockatoo Squid (Galiteuthis)
F) Swordtail Squid (Chiroteuthis)
G) Octopus Squid (Octopoteuthis)
H) Piglet Squid (Heliocranchia)
I) Swordtail Squid (Chiroteuthis)

Glow: Living Lights

Don’t miss the first-ever museum exhibition to explore the phenomenon of bioluminescence — an organism’s ability to produce its own light.

Visitors to Glow: Living Lights start their journey by investigating the chemical process that produces “cool” light. They then explore the world of light-producing terrestrial organisms like fireflies, glow worms and foxfire fungus before traveling on to the mid-ocean, where an estimated 90 percent of the animals produce light. Here visitors encounter alien-looking creatures like viper fish, which dangle a light lure to attract their next meal, and cookie cutter sharks, which earned their name from the cookie-size chunks of flesh they take out of unsuspecting prey in the dark. Visitors continue on to demonstrations of the interesting techniques and equipment used by scientists to study bioluminescence, and then explore the many benefits of this research — from helping to speed the study of cancer-fighting drugs to the detection of anthrax spores in public places.

The exhibit is open from 10 am–5 pm Monday–Saturday and noon–5 pm Sunday, with the last entry at 4 pm every day.

Tickets prices are: $7 Adults; $5 Seniors/Students; $4 Children (5–11); free to Members.

Although cephalopods aren’t specifically mentioned in the above description, they use an image of a biolumenescent squid on their site and their print ads for the exhibit, so I’m confident our glowy, tentacled friends will be included!

If you’ve never been to the NC Museum of Natural Sciences, I highly recommend it. Their permenent exhibits include a nearly complete mounted skelton of Cretaceous Theropod Acrocanthosaurus atokensis (aka, Acro, Terror of the South!), a specimen of the Cretaceous Ornithopod Thescelosaurus which was found with a fossilized heart (aka, Willo), and an impressive collection of mounted whale skeletons.

The museum is located at 11 West Jones St, Raleigh, NC. It’s open seven days a week and admisson is Free (except for special exhibits).

The episode is a little over 1 hour long, and I haven’t had a chance to listen to it yet. Of course, I have quite a bit of extra time on my hands these days (in theory at least), so I’m sure I can block out some time for one of my favorite topics!

You can download the episode (June 16, show 019) and read the show notes here.

Monster Talk is a skeptical look at the creatures of cryptozoology and folklore. Hosts Blake Smith, Ben Radford, and Dr. Karen Stollznow interview scientists and other experts about the science (or lack thereof) behind the word’s legendary beats.

You can subscribe to Monster Talk for free via RSS or iTunes.

First, we have some new research about the metabolism of Mesonychoteuthis hamiltoni, Sensational Squid #2;

National Geographic: “Colossal Squid a Soft, Sluggish Drifter”

Summary: A study published in the Journal of the Marine Biological Association of the United Kingdom finds that M. hamiltoni is not a ferocious hunter as often imagined, but rather a slow, passive ambush predator. The researchers measured the metabolic rates of smaller cold water squid species and scaled up the results to account for the size of the Colossal Squid. Their analysis indicates that the Colossal Squid has a very low metabolic rate, low energy requirements, and moves very slowly. The study team estimates that a single 11 pound fish can sustain a 1,100 pound squid for 200 days.

The next story is directly related to last week’s Argonaut video;

Wired Science: “Argonaut Octopus Mystery Solved”

Summary: In a study published in the Proceedings of the Royal Society B, biologists Julian Finn and Mark Norman (both of Museum Victoria, Melbourne, Australia) have found that female Argonauts use air bubbles trapped in their shell-like egg cases to control their buoyancy. When wild Argonauts lost the air bubble, they were observed quickly swimming to the surface to take in more air. They positioned their bodies within their cases to create an air-tight seal and then descended to a depth where the water pressure compressed the trapped air enough to achieve neutral buoyancy.

Parapuzosia seppenradensis. (replica), originally uploaded by muzina_shanghai.

I’m still in a paleontological mood after yesterday’s big news, so here is another big fossil…literally. Parapuzosia seppenradensis is desmoceratid ammonite from Late Cretaceous Germany, and it is the largest known ammonite species. An incomplete specimen found in 1895 had a diameter of 1.95 meters (~6 ft), and in life it is estimated to have been 2.55 meters (over 8 ft) across.

As big as P. seppenradensis was, it was by no means the largest prehistoric cephalopod. That honor goes to the giant Ordovician orthoconic (i.e. straight-shelled) nautiloid Cameroceras, which may have been as much 11 meters long (~36 ft). Of course that is the topic for another post…