Submariner — Sea Life

The Helixlight Choir Medusa drifts in slow spirals, arranging its tendrils into glowing double-helix loops whenever music crosses the hull. It rarely attacks, but every pulse seems to tune nearby instruments a fraction brighter, as if the creature is harmonizing with machinery instead of flesh. Science crews collect its shed light-filaments for tiny sustained power loops and for the uncomfortable beauty of watching them sing without mouths.