💡 Ever wondered how sharks avoid sinking? 🦈
It is not lungs, not magic, but oil, cartilage, and lift shaping their place in the sea.
Full dive here: 📖 https://TPC8.short.gy/r2yc5dtP
In every rise and glide, survival becomes art, a living balance between gravity and grace. 🌊
#Sharks #SharkScience #MarineBiology #OceanExploration #OceanLife #MarineEcology #Evolution #MarineLife #Buoyancy #ScienceCommunication #Biodiversity #Conservation #ThePerpetuallyCurious #TPC8
Sharks don’t have bones—but what’s inside them could transform future materials. Dive into the nanoscale marvel of their skeleton. #Biomaterials #SharkScience #NanoDesign
https://geekoo.news/what-shark-skeletons-reveal-at-the-nanoscale/
🦈 🇵🇫 New #SharkScience
We used photo-ID & laser-photogrammetry to describe the seasonal population of great hammerhead sharks in Rangiroa & Tikehau atolls in French Polynesia
https://frontiersin.org/articles/10.3389/fmars.2023.1234059/full
Happy for this collab with #MokarranProtectionSociety
The occurrence and seasonality of the Critically Endangered great hammerhead shark, Sphyrna mokarran, is data deficient in the Central Pacific region. Using photo-identification and laser-photogrammetry, we describe the seasonal population of great hammerhead sharks in the Tiputa pass (Rangiroa atoll) and Tuheiava pass (Tikehau atoll) in the Tuamotu archipelago of French Polynesia. During the austral summer of 2020 and 2021, we recorded a female-biased aggregation of at least 55 individuals (54 females; 1 unknown sex), representing an unprecedented number of S. mokarran in one study. All measured sharks were likely mature with pre-caudal lengths ranging from 147 cm to 297 cm (n = 35). Videos from citizen scientists recorded over a 15-year period enable us to identify 30 additional individuals between 2006 and 2019, with strong evidence of sexual segregation during the year. Our findings revealed seasonal residency (n = 32) of up to 6 days/month and for up to 5 months at the study site during the austral summer. We also demonstrated site fidelity with 32 individuals returning to the same atoll for up to 12 years between the first and last sighting, and with limited evidence of connectivity between the two sites. Our analysis also provides preliminary insight into the environmental factors driving S. mokarran aggregation in the Tiputa pass, suggesting a marked influence of the lunar cycle and of ocellated eagle rays (Aetobatus ocellatus) abundance. This study, conducted in s...
https://youtu.be/NxgNTtq4SUA
The Perpetually Curious!
Geekoo
Johann Mourier
Mike O’Neill
Vianey Leos Barajas