All from the Leica Q (116), mostly at f/2.8 using auto ISO (I'm lazy, forgive me)
no polarizer used, no photoshop, just some quick presets slapped on to get rid of the blue tones.
I would pull pull back some of the reds in ACR. In color mixer pull back try pulling back the red saturation or lumination or both in the red channel on the jellyfish images. Pushed like because of the shark.
Thanks, the sharks there were really cool, but I do feel bad for them...
EDIT: you sent me down a rabbit hole, mate
I tried to recover the details in those reds, but it's impossible. I can reduce exposure by 4 stops and it's still clipping.
Re-did the image to darken it a bit and get more details out of it, but that "core" of the Jelly was just glowing too brightly.
There are times where a sensor reaches its limits. And the horrible lighting in a jellyfish tank seems to be one of those times. (had that issue in the past with my Canon when I tried to photograph certain purple flower blossoms, couldn't get the colour right at all without clipping)
Didn't even notice that my edited image was clipping so badly in the reds there..