Dato random de hoy: los tiburones hacen clicks si se les manipula en cautividad
royalsocietypublishing.org/rsos/article...
royalsocietypublishing.org/rsos/article...
November 1, 2026 at 8:43 PM
Dato random de hoy: los tiburones hacen clicks si se les manipula en cautividad
royalsocietypublishing.org/rsos/article...
royalsocietypublishing.org/rsos/article...
Ok, current theory is it’s a skate (similar to a ray but not the same.) Those two fleshy bits on either side of the tail are pelvic fins. A ray would have just one lobe on either side.
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
What’s the Difference Between Stingrays and Skates?
Stingrays and skates are both elasmobranchs, meaning they are cartilaginous fish whose skeleton is made of cartilage instead of bone.
oceanconservancy.org
October 28, 2026 at 6:02 PM
Ok, current theory is it’s a skate (similar to a ray but not the same.) Those two fleshy bits on either side of the tail are pelvic fins. A ray would have just one lobe on either side.
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
Have you heard of the thresher shark? It can whip its scythe-like tail to stun prey fish, often knocking out several fish with a single slap!
A thresher's average tail slap whips by at 14 meters/second (~50 kph) but they have been known to get close to 80 kph!
www.sharks.org/blog/blogs/s...
A thresher's average tail slap whips by at 14 meters/second (~50 kph) but they have been known to get close to 80 kph!
www.sharks.org/blog/blogs/s...
A Slap Upside the Head — Shark Research Institute
Thresher sharks are among the most impressive of elasmobranchs, their scythe-like tails nearly equaling their bodies in length. Many hypotheses have been proposed for the function of these elongated…
www.sharks.org
November 2, 2026 at 10:28 PM
Have you heard of the thresher shark? It can whip its scythe-like tail to stun prey fish, often knocking out several fish with a single slap!
A thresher's average tail slap whips by at 14 meters/second (~50 kph) but they have been known to get close to 80 kph!
www.sharks.org/blog/blogs/s...
A thresher's average tail slap whips by at 14 meters/second (~50 kph) but they have been known to get close to 80 kph!
www.sharks.org/blog/blogs/s...
1 of 3.
Last week I took part in a survey aiming to help us better understand our illusive marine neighbour, the Flapper Skate. The flapper skate is the worlds largest skate (!), a member of the shark family (elasmobranchs) which breeds within the sound of Jura MPA and Hopespot!
Last week I took part in a survey aiming to help us better understand our illusive marine neighbour, the Flapper Skate. The flapper skate is the worlds largest skate (!), a member of the shark family (elasmobranchs) which breeds within the sound of Jura MPA and Hopespot!
October 29, 2026 at 1:12 PM
1 of 3.
Last week I took part in a survey aiming to help us better understand our illusive marine neighbour, the Flapper Skate. The flapper skate is the worlds largest skate (!), a member of the shark family (elasmobranchs) which breeds within the sound of Jura MPA and Hopespot!
Last week I took part in a survey aiming to help us better understand our illusive marine neighbour, the Flapper Skate. The flapper skate is the worlds largest skate (!), a member of the shark family (elasmobranchs) which breeds within the sound of Jura MPA and Hopespot!
タイトル：資源利用の生涯的視点：クロホシザメの空間的・発育段階に伴う食性変化
実験対象：北西アドリア海のクロホシザメ
・北部では頭足類や魚類、南部では十脚甲殻類を多く捕食した。
・成熟雌では高次捕食者への食性変化、幼魚期後には沖合への移動が示された。
実験対象：北西アドリア海のクロホシザメ
・北部では頭足類や魚類、南部では十脚甲殻類を多く捕食した。
・成熟雌では高次捕食者への食性変化、幼魚期後には沖合への移動が示された。
A lifetime perspective on resource use: spatial and ontogenetic trophic shifts in the blackspotted smooth-hound (Mustelus punctulatus).
【Mar Environ Res】Elasmobranchs are facing severe threats worldwide from overfishing and related high bycatch, and particularly so
pubmed.ncbi.nlm.nih.gov
November 2, 2026 at 3:49 AM
タイトル：資源利用の生涯的視点：クロホシザメの空間的・発育段階に伴う食性変化
実験対象：北西アドリア海のクロホシザメ
・北部では頭足類や魚類、南部では十脚甲殻類を多く捕食した。
・成熟雌では高次捕食者への食性変化、幼魚期後には沖合への移動が示された。
実験対象：北西アドリア海のクロホシザメ
・北部では頭足類や魚類、南部では十脚甲殻類を多く捕食した。
・成熟雌では高次捕食者への食性変化、幼魚期後には沖合への移動が示された。
Diversity and Community Structure of Coastal Elasmobranchs in the French West Indies
doi.org/10.3390/d181...
doi.org/10.3390/d181...
Diversity and Community Structure of Coastal Elasmobranchs in the French West Indies
Coastal elasmobranchs play key functional roles in Caribbean reef ecosystems, yet their populations have declined markedly across the region. To address major knowledge gaps in the French West Indies…
doi.org
October 24, 2026 at 12:00 AM
Diversity and Community Structure of Coastal Elasmobranchs in the French West Indies
doi.org/10.3390/d181...
doi.org/10.3390/d181...
Ok, current theory is it’s a skate (similar to a ray but not the same.) Those two fleshy bits on either side of the tail are pelvic fins. A ray would have just one lobe on either side.
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
What’s the Difference Between Stingrays and Skates?
Stingrays and skates are both elasmobranchs, meaning they are cartilaginous fish whose skeleton is made of cartilage instead of bone.
oceanconservancy.org
October 28, 2026 at 6:02 PM
Ok, current theory is it’s a skate (similar to a ray but not the same.) Those two fleshy bits on either side of the tail are pelvic fins. A ray would have just one lobe on either side.
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
Alternatively it’s a face hugger from Alien per @dtl.bsky.social 😅
Thank you all for the detective work! 🌿 🦑
A lifetime perspective on resource use: spatial and ontogenetic trophic shifts in the blackspotted smooth-hound (Mustelus punctulatus).
doi.org/10.1016/j.ma...
doi.org/10.1016/j.ma...
A lifetime perspective on resource use: spatial and ontogenetic trophic shifts in the blackspotted smooth-hound (Mustelus punctulatus)
Elasmobranchs are facing severe threats worldwide from overfishing and related high bycatch, and particularly so in the Mediterranean Sea, where 65% o…
doi.org
October 19, 2026 at 12:44 PM
A lifetime perspective on resource use: spatial and ontogenetic trophic shifts in the blackspotted smooth-hound (Mustelus punctulatus).
doi.org/10.1016/j.ma...
doi.org/10.1016/j.ma...
Map of life update
Sharks and Rays are the only surviving members of a group of fish known as the elasmobranchs, but there were other. I've added one, Cladoselache, on the top left.
The full map of life can be seen here: matildaslab.wordpress.com/map-of-life/
#scicomm #sciart #evolution #infographic
Sharks and Rays are the only surviving members of a group of fish known as the elasmobranchs, but there were other. I've added one, Cladoselache, on the top left.
The full map of life can be seen here: matildaslab.wordpress.com/map-of-life/
#scicomm #sciart #evolution #infographic
October 19, 2026 at 11:19 AM
Map of life update
Sharks and Rays are the only surviving members of a group of fish known as the elasmobranchs, but there were other. I've added one, Cladoselache, on the top left.
The full map of life can be seen here: matildaslab.wordpress.com/map-of-life/
#scicomm #sciart #evolution #infographic
Sharks and Rays are the only surviving members of a group of fish known as the elasmobranchs, but there were other. I've added one, Cladoselache, on the top left.
The full map of life can be seen here: matildaslab.wordpress.com/map-of-life/
#scicomm #sciart #evolution #infographic
🚨New Pub!🚨A new taxon of hybodontiform (Chondrichthyes, Elasmobranchii, Hybodontiformes) from the Late Triassic of Arizona, U.S.A., and its biostratigraphic importance within the Chinle Formation🦈🇺🇸by Keeble et al.
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
A new taxon of hybodontiform (Chondrichthyes, Elasmobranchii, Hybodontiformes) from the Late Triassic of Arizona, U.S.A., and its biostratigraphic importance within the Chinle Formation
Elasmobranchs are excellent candidates for biostratigraphy, with distinctive dentitions and wide distributions over a long period of time. However, the high variation in tooth shapes present within...
www.tandfonline.com
September 21, 2026 at 5:05 PM
🚨New Pub!🚨A new taxon of hybodontiform (Chondrichthyes, Elasmobranchii, Hybodontiformes) from the Late Triassic of Arizona, U.S.A., and its biostratigraphic importance within the Chinle Formation🦈🇺🇸by Keeble et al.
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
Um novo táxon de hibodontiforme (Chondrichthyes, Elasmobranchii, Hybodontiformes) do Triássico Tardio do Arizona, E.U.A., e sua importância bioestratigráfica dentro da Formação Chinle www.tandfonline.com/doi/full/10....
A new taxon of hybodontiform (Chondrichthyes, Elasmobranchii, Hybodontiformes) from the Late Triassic of Arizona, U.S.A., and its biostratigraphic importance within the Chinle Formation
Elasmobranchs are excellent candidates for biostratigraphy, with distinctive dentitions and wide distributions over a long period of time. However, the high variation in tooth shapes present within...
www.tandfonline.com
September 21, 2026 at 12:59 PM
Um novo táxon de hibodontiforme (Chondrichthyes, Elasmobranchii, Hybodontiformes) do Triássico Tardio do Arizona, E.U.A., e sua importância bioestratigráfica dentro da Formação Chinle www.tandfonline.com/doi/full/10....
Nice longread on how elasmobranchs (sharks and rays) have become much more central to marine conservation and fisheries management in the Northeast Atlantic, reflecting both the growing recognition of their vulnerability to overexploitation and the broader evolution toward ecosystem-based management
How ICES has shaped elasmobranch knowledge, assessment, and policy in the Northeast Atlantic
academic.oup.com/icesjms/arti...
academic.oup.com/icesjms/arti...
How ICES has shaped elasmobranch knowledge, assessment, and policy in the Northeast Atlantic
Abstract. At the inception of the ICES Journal of Marine Science, first published in 1926, elasmobranchs were largely peripheral to fisheries science. Beyo
academic.oup.com
September 4, 2026 at 1:26 PM
Nice longread on how elasmobranchs (sharks and rays) have become much more central to marine conservation and fisheries management in the Northeast Atlantic, reflecting both the growing recognition of their vulnerability to overexploitation and the broader evolution toward ecosystem-based management
How ICES has shaped elasmobranch knowledge, assessment, and policy in the Northeast Atlantic
academic.oup.com/icesjms/arti...
academic.oup.com/icesjms/arti...
How ICES has shaped elasmobranch knowledge, assessment, and policy in the Northeast Atlantic
Abstract. At the inception of the ICES Journal of Marine Science, first published in 1926, elasmobranchs were largely peripheral to fisheries science. Beyo
academic.oup.com
September 4, 2026 at 1:13 PM
How ICES has shaped elasmobranch knowledge, assessment, and policy in the Northeast Atlantic
academic.oup.com/icesjms/arti...
academic.oup.com/icesjms/arti...
Frontiers | Distribution of the Pacific stingray (Styracura pacifica) in the Térraba River Mouth, Térraba Sierpe National Wetland, Pacific of Costa Rica
Frontiers | Distribution of the Pacific stingray (Styracura pacifica) in the Térraba River Mouth, Térraba Sierpe National Wetland, Pacific of Costa Rica
Coastal wetlands are vital habitats for elasmobranchs, yet the spatial ecology of many species remains poorly understood, hindering effective conservation. T...
www.frontiersin.org
September 2, 2026 at 7:03 PM
Frontiers | Distribution of the Pacific stingray (Styracura pacifica) in the Térraba River Mouth, Térraba Sierpe National Wetland, Pacific of Costa Rica
Variations in the trophic niche of elasmobranchs in the Celtic Sea: skates' stable versus sharks' adaptative niches doi.org/10.3354/esr0...
Variations in the trophic niche of elasmobranchs in the Celtic Sea: skates' stable versus sharks' adaptative niches
doi.org
August 29, 2026 at 8:16 PM
Variations in the trophic niche of elasmobranchs in the Celtic Sea: skates' stable versus sharks' adaptative niches doi.org/10.3354/esr0...
A brief window into elasmobranch diversity 🦈
Courtesy of Ichthyologie; ou, Histoire naturelle des poissons : En six parties avec 216 planches dessinées et enluminées d'après nature. Published in 1796.
#sharks #rays #elasmobranchs
Courtesy of Ichthyologie; ou, Histoire naturelle des poissons : En six parties avec 216 planches dessinées et enluminées d'après nature. Published in 1796.
#sharks #rays #elasmobranchs
August 29, 2026 at 11:36 AM
A brief window into elasmobranch diversity 🦈
Courtesy of Ichthyologie; ou, Histoire naturelle des poissons : En six parties avec 216 planches dessinées et enluminées d'après nature. Published in 1796.
#sharks #rays #elasmobranchs
Courtesy of Ichthyologie; ou, Histoire naturelle des poissons : En six parties avec 216 planches dessinées et enluminées d'après nature. Published in 1796.
#sharks #rays #elasmobranchs
🚨 #NEOBLUE_NEWS 🚨
The second field season is underway, and we are already seeing blue sharks near the Ría de Vigo! 💙🦈
Thanks to @saveourseas.bsky.social for supporting this work! 🙏
The season is just getting started 👀👀
#Sharks #BRUVs #Elasmobranchs
The second field season is underway, and we are already seeing blue sharks near the Ría de Vigo! 💙🦈
Thanks to @saveourseas.bsky.social for supporting this work! 🙏
The season is just getting started 👀👀
#Sharks #BRUVs #Elasmobranchs
August 25, 2026 at 4:20 PM
🚨 #NEOBLUE_NEWS 🚨
The second field season is underway, and we are already seeing blue sharks near the Ría de Vigo! 💙🦈
Thanks to @saveourseas.bsky.social for supporting this work! 🙏
The season is just getting started 👀👀
#Sharks #BRUVs #Elasmobranchs
The second field season is underway, and we are already seeing blue sharks near the Ría de Vigo! 💙🦈
Thanks to @saveourseas.bsky.social for supporting this work! 🙏
The season is just getting started 👀👀
#Sharks #BRUVs #Elasmobranchs
Citizen Science for Sharks and Rays: Evaluating iNaturalist Records to Document Elasmobranch Diversity and Occurrence in the Mediterranean Sea
Citizen Science for Sharks and Rays: Evaluating iNaturalist Records to Document Elasmobranch Diversity and Occurrence in the Mediterranean Sea
Elasmobranchs in the Mediterranean Sea face intense human-induced pressures, with nearly half of their populations at risk of extinction. Overexploitation, limited data availability, lack of…
onlinelibrary.wiley.com
August 24, 2026 at 8:16 PM
Citizen Science for Sharks and Rays: Evaluating iNaturalist Records to Document Elasmobranch Diversity and Occurrence in the Mediterranean Sea
Understanding Pressures on Threatened Elasmobranchs and Their Drivers to Design Effective Management: Insights From Southern Sumbawa
Understanding Pressures on Threatened Elasmobranchs and Their Drivers to Design Effective Management: Insights From Southern Sumbawa
Overfishing of elasmobranchs is a major conservation concern, with large proportions of elasmobranch fishing mortality attributable to incidental catch in small-scale fisheries. Understanding the…
onlinelibrary.wiley.com
August 23, 2026 at 4:57 PM
Understanding Pressures on Threatened Elasmobranchs and Their Drivers to Design Effective Management: Insights From Southern Sumbawa
doi.org/10.1016/j.ma...
#SPEetologia
This provides a reference for future biomonitoring and conservation.
#SharkConservation #MarineEcology #TraceElements #Biomonitoring #Elasmobranchs #MarinePollution #ConservationScience #OceanHealth #CaboVerde #MarineBiology
#SPEetologia
This provides a reference for future biomonitoring and conservation.
#SharkConservation #MarineEcology #TraceElements #Biomonitoring #Elasmobranchs #MarinePollution #ConservationScience #OceanHealth #CaboVerde #MarineBiology
Redirecting
doi.org
August 13, 2026 at 8:21 AM
doi.org/10.1016/j.ma...
#SPEetologia
This provides a reference for future biomonitoring and conservation.
#SharkConservation #MarineEcology #TraceElements #Biomonitoring #Elasmobranchs #MarinePollution #ConservationScience #OceanHealth #CaboVerde #MarineBiology
#SPEetologia
This provides a reference for future biomonitoring and conservation.
#SharkConservation #MarineEcology #TraceElements #Biomonitoring #Elasmobranchs #MarinePollution #ConservationScience #OceanHealth #CaboVerde #MarineBiology
I very, very much doubt that staff in an aquarium, who would have studied marine animals in depth (no pun intended) would be 'flummoxed' by a case of parthenogenesis in elasmobranchs... A group that this phenomenon is well known in.
I thought The Guardian was above sensationalism.
Grow up.
I thought The Guardian was above sensationalism.
Grow up.
January 28, 2025 at 6:54 PM
I very, very much doubt that staff in an aquarium, who would have studied marine animals in depth (no pun intended) would be 'flummoxed' by a case of parthenogenesis in elasmobranchs... A group that this phenomenon is well known in.
I thought The Guardian was above sensationalism.
Grow up.
I thought The Guardian was above sensationalism.
Grow up.
This animal is known by skull elements and gnarly teeth. Fossils are rare, in the sense that serrated, broad, teeth like this are found nowhere else in Mississippian elasmobranchs, and because it's fossils are very uncommon, despite it being found in a broad swath of North American rocks.
January 13, 2025 at 11:39 PM
This animal is known by skull elements and gnarly teeth. Fossils are rare, in the sense that serrated, broad, teeth like this are found nowhere else in Mississippian elasmobranchs, and because it's fossils are very uncommon, despite it being found in a broad swath of North American rocks.
"just rocks" is exactly what Big Martian Elasmobranchs wants Earth's sheeple to believe,
May 23, 2025 at 6:57 AM
"just rocks" is exactly what Big Martian Elasmobranchs wants Earth's sheeple to believe,