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#MarineBiology

3 posts3 participants0 posts today
Public
Stan Carey

I will never not click on cuttlefish. This episode of Many Minds with Dr Tessa Montague taught me so much about these amazing animals:
manyminds.libsyn.com/the-cuttl

manyminds.libsyn.comMany Minds: The cuttlefish and its coat of many colorsWe humans have a hard time becoming invisible. For better or worse, we're basically stuck with the skin and body we have; we’re pretty fixed in our color, our shape, our overall appearance. And so we're fascinated by creatures that aren't—creatures that morph to meet the moment, that can functionally disappear, that can shape-shift on a dime. And no creatures are more skilled, more astonishing, more bedazzling in their abilities to do this kind of thing than the cephalopods. But how do they do this exactly? What's going on in their skin? What's going on under their skin? And what's going on in their brains that makes this all possible? My guest today is . Tessa is a neuroscientist in the Axel Lab at Columbia University; she studies the brain and behavior of the dwarf cuttlefish, with a special focus on the biology of their dynamic skin behaviors. Here, Tessa and I talk about how cuttlefish and other cephalopods exhibit the most impressive camouflaging abilities on the planet. We discuss how they change their skin's appearance with remarkable speed and fidelity—and not just when trying to blend in, but also when hunting, courting, fighting, and more. We talk about whether these behaviors are flexible and whether they're voluntary. We linger on the cruel irony that cuttlefish seem to be colorblind. We talk about the idea that a cephalopod's skin is kind of a window into their brain. We lay out the cells and organs in the cephalopod skin the make these behaviors possible—especially the tiny pigment-bearing structures called "chromatophores." And of course we also dive deep into the cephalopod brain and its sometimes bizarre and poorly understood structures. Excited to share it with you friends—I think you'll enjoy it. Without further ado, here's my chat with Dr. Tessa Montague.   A transcript of this episode will be posted soon.   Notes and links 3:00 – For more on Dr. Montague’s recent expeditions to the Philippines, including photos, see . 7:30 – Dr. Montague has published two recent reviews of dynamic skin behaviors in cephalopods—see and . We previously discussed cephalopod intelligence in a with Dr. Alex Schnell and a with the novelist Ray Nayler. 18:30 – For discussion of a recent “renaissance” in new model organisms, see . 20:30 – For more on how chameleons change color, see . 25:00 – A on cuttlefish camouflage, featuring the researcher Dr. Robert Hanlon. 30:30 – A on the details of pattern matching in cuttlefish camouflage. 31:00 – For more on the mimicking plant Boquila trifoliolata, see this . See also our with Dr. Paco Calvo and Dr. Natalie Lawrence. 35:00 – A about the so-called mimic octopus.  40:00 – For the hypothesis about color discrimination via chromatic aberration and pupil shape, see . 44:00 – For more on the “split body” skin behaviors observed in some cuttlefish, see . 51:00 – For the David Attenborough clip about a cuttlefish hypnotizing a crab, see . For the recent New York Times article on cuttlefish hunting behavior, including videos, see . For the academic article that inspired the New York Times piece, see . 58:00 – A on the possibility of octopus skin activity during dreaming. A that helped popularize the idea of cephalopod skin activity as evidence of dreaming. Our on why we—and other creatures—dream. 1:06:00 – For a study on chromatophore development from the lab of Dr. Gilles Laurent, see . 1:11:00 – For more on papillae, including videos, see .  1:17:00 – To explore an animated model of the cuttlefish brain, see of Dr. Montague’s website, .   Recommendations , Danna Staaf , Peter Godfrey-Smith , Roger Hanlon & John B. Messenger   Many Minds is a project of the , which is made possible by a generous grant from the John Templeton Foundation to Indiana University. The show is hosted and produced by , with help from Assistant Producer and with creative support from DISI Directors Erica Cartmill and Jacob Foster. Our artwork is by . Our transcripts are created by . Subscribe to Many Minds on Apple, Stitcher, Spotify, Pocket Casts, Google Play, or wherever you listen to podcasts. You can also now subscribe to the Many Minds newsletter ! We welcome your comments, questions, and suggestions. Feel free to email us at: manymindspodcast@gmail.com.    For updates about the show, visit or follow us on Twitter () or Bluesky ().
#podcast#science#cuttlefish
Public
Calishat

#wildlife #zoology #MarineBiology #migration

'Scientists have launched an interactive global map to show the migratory patterns of more than 100 marine species in an effort to protect at-risk wildlife.

New models were developed by The University of Queensland and Duke University scientists to be part of the Migratory Connectivity in the Ocean (MiCO) database which aims to bridge information gaps for policymakers and conservationists.'

uq.edu.au/news/article/2025/03

UQ NewsDatabase reveals vital ocean links to aid conservationScientists have launched an interactive global map to show the migratory patterns of more than 100 marine species in an effort to protect at-risk wildlife.
Public
ABC Feeds

SA's toxic algal bloom 'larger than we have ever seen before'
By Rachael Merritt

A toxic algal bloom linked with marine deaths across South Australia has grown to an unprecedented scale and will only be stopped by a change in weather, Environment Minister Susan Close says.

abc.net.au/news/2025-05-08/siz

ABC News · SA's toxic algal bloom similar to size of Kangaroo Island, state government saysBy Rachael Merritt
#MarineBiology#EnvironmentalHealth#RachaelMerritt
Public
ABC Feeds

'I could have been a Steve Irwin': Woman barbed by stingray near artery in arm

A volunteer marine researcher looking into marine deaths along South Australia's coastline was rushed to hospital after her arm was skewered by a 16-centimetre stingray barb. Yesterday, a dead white shark washed up on an Adelaide beach, with testing being conducted to determine a cause.

abc.net.au/news/2025-05-06/mar

ABC News · Stingray attack off SA coast leaves woman with 16cm barb near artery in armBy Daniel Keane
#MarineIncidents#OceansandReefs#MarineBiology
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