Susanne Bähr

@coralsandcrabs.bsky.social

Marine scientist 🪸Postdoc at the California Academy of Sciences 🔬 studying cryptic diversity of mesophotic coral reefs 🦀 CCR diver and UW photographer 🐠

I started surveying the shallow reef flats in front of KAUST for my PhD in 2020. I was impressed that corals could live in such extreme conditions - the water hits 38ºC in the summer! However, heatwaves in '23 and '24 were too much even for these corals. Today's survey had nearly 100% mortality 😞 🌊🦑

A shallow reef flat in August 2023 covered with branching corals. About half of them are live and yellow, while the rest are dead from natural mortality over the years.A few bright white coral colonies in the reef flat that are undergoing bleaching in August 2024.The same reef flat after the bleaching event. Photo taken December 2024. All colonies are grey and dead.

Waited a while to share the (literally) most exciting part of my PhD project… Behold the fantastic fluorescence of coral-dwelling gall crabs! Very Christmas-themed if you ask me 🎄Currently busy investigating the evolution and origin of this phenomenon in cryptochirids 🦀🧪✨🦑

BildBildBildBild

I'm back from the really good Indo-Pacific Fish Conference, and will now restart everyone's timeline cleanse with beautiful fish. Starting with one of my all-time favorites, a baby Emperor Angelfish (Pomacanthus imperator). The species is widely distributed in the Indo-Pacific.

Bild

ICMERS just started here at KAUST! Tomorrow, I‘ll be giving a talk about parts of my PhD work revealing that the gall crab communities in the Red Sea are much more dynamic than we expected. 🦀🧪🦑

BildBildBild

Busy in the field with my favourite little critters at the moment. Just finished post-bleaching monitoring of my permanent transects to study the temporal variability of gall crab communities and how they are affected by stressors like marine heatwaves. Stay tuned for more field updates 🦀🧪🦑💙

BildBildBild

Throwback to diving pretty, turbid reefs with big tables in the Kisite Mpunguti Marine National Park in south Kenya. Stayed there while researching if coral guardian crabs (Trapezia) can deter the corallivorous Crown of Thorns Starfish for my Master thesis🧪🦑

BildBildBild