The Surge Jelly (Staurobrachia capacitor) is a single complex organism with two rigid fins full of electrocytes that generate 400–1000 volts at 1 amp — enough to kill a player outright. It coordinates via a nerve net with rhopalia sensory organs and retains a vestigial stalk from its clonal growth phase.
Its tissue is radioactive and heat-tolerant, pointing to deep-ocean, hydrothermal-vent origins. Surge Jellies communicate by electric fields, which some sources read as a hint of learned, generational behaviour.
Counterplay: keep your distance and scan from afar — a scan can unlock a biomod. Treat any close approach near vents as potentially lethal; the discharge does not need a direct bite to kill.