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JOAN BRULL
absolutely everyone is missing the point of “the green knight” by overanalyzing everything about it EXCEPT me and @spohkh, sorry to everyone else but we’re different
Palazzo Medici Riccardi: Courtyard
Via Camillo Cavour, Florence
Clownfish, aka anemonefish, famous by their distinct white bar patterns seen in Disney’s Finding Nemo, can count up to three, a new study finds.
There around 28 different species of anemonefish know to date, having between 0 to 3 white stripes, which has been suggested to be important for species recognition. In a recent study, researchers found out that in lab conditions, common anemonefish (Amphiprion ocellaris), a species that displays three white bars, when faced with an intruder fish, attacked their own species more frequently than other species of intruding anemonefish.
Recearchers tested how common anemonefish could count number of stripes, and they used orange plastic models with different numbers of bars, and compared whether the frequency of aggressive behavior towards the model differed according to the number of bars. The frequency of aggressive behavior toward the 3-bar model was the same as against living common anemonefishes and was higher than towards any of the other models.
-Plastic models used to measure the aggressive behavior of clown fish. Clownfish could count stripe and shown aggresive behavior following the number of stripe. Photo by Kina Hayashi.
Researchers believe common clowfish count the number of white stripes as a cue to identify and attack only competitors that might use the same anemone where they live, using counting as an important behavior for efficient host defense.
Photo: Gaell Mainguy ·
Reference (Open Access): Hayashi et al., 2024. Counting Nemo: anemonefish Amphiprion ocellaris identify species by number of white bars. Journal of Experimental Biology
huge shoutout to trees and also rain
do you ever see someone and think thousands of poems must have been written about you
Left to right: a pelagic nudibranch, crab megalopa and soapfish all photographed at about 16 feet. Photograph: Robert Stansfield/Media Drum Images
Discovered In The Deep: A ‘Night-Time Migration’ of Marine Life – In Pictures
These images were taken by underwater photographer Robert Stansfield, from Southampton, UK, on a blackwater dive in the open ocean surround the island of Cozumel, Mexico.‘The blackwater dives never fail to amaze me with the crazy alien-like life forms that drift past out in the open ocean, well away from a reef,’ says Robert. ‘The idea is to see the largest biomass migration on the planet. Every night a huge volume of life migrates up from the mesopelagic zone up to the epipelagic. This night-time migration gives us the opportunity to see life at the surface that normally lives well beyond recreational diving depths.’
A Squid, Photographed at 5 metres in Cozumel, Mexico. Photograph: Media Drum Images/Robert Stansfield
A Rainbow Tripodfish, Photographed at 5 metres. Photograph: Media Drum Images/Robert Stansfield
An Atlanta Heteropod, or Sea Elephant, Photographed at about 20 metres. Photograph: Media Drum Images/Robert Stansfield
A Flying Fish, Photographed at the Surface. Photograph: Media Drum Images/Robert Stansfield
A Transparent Oxycephalus Smphipod on a Hydromedusa, Photographed at about 18 metres. Photograph: Media Drum Images/Robert Stansfield
A Male Argonaut on Salp, Photographed at 19 metres. Photograph: Media Drum Images/Robert Stansfield
A Pelagic Nudibranch, Photographed at 5 metres. Photograph: Media Drum Images/Robert Stansfield
A Crab Megalopa, Photographed at 5 metres. Photograph: Media Drum Images/Robert Stansfield
A Soapfish, Photographed at about 5 metres. Photograph: Media Drum Images/Robert Stansfield
Benjamin Alire Saenz, The Inexplicable Logic of My Life
The white shark (Carcharodon carcharias) is the largest predator fish in the world, however, the early life history and reproduction of this iconic shark is still poorly understood, in fact, no one has seen a white shark puppy in the wild, nonetheless, recent aerial observations made by drone off California, USA, have revealed the first images of a white shark puppy.
Footage done by wildlife filmmaker Carlos Gauna and biologist Phillip Sternes in July 2023, revealed seconds of a single pale pup, which apparently was shedding its embryonic layer. This record robusts the idea the coast of central California acts a birthing location for white sharks. This shark was stimated to reach 1.5 m in lenght. Many researchers believe white sharks are born farther out at sea, due the elusivity to find pups. This finding means they are likely to born in shallow waters.
Photo: Carlos Gauna
Reference : Gauna & Sternes2024. Novel aerial observations of a possible newborn white shark (Carcharodon carcharias) in Southern California, Environmental Biology of Fishes