A single bit was how it started and then came the screams and eventually bloody gurgling. The dark mist had taken over and the zombies were piling on every ship. What she'd assumed to be a single arrow was shot at every single ship in their fleet. Laced with concentrated necrotic power the arrows spewed poison into their victims and raised them as undeads.
Cautioned by the screaming of others or protected by their armor, the remaining crew–the majority, tried to conjure more light but with the mist moving towards them, the darkness grew thicker and the lights grew ineffective. Growing ever more hysteric, the warriors began swinging their blades, their halberds and spears at the faintest noise.
"AHHH! WHAT THE–UGHHH!" To their dismay, however, the ones they were hitting were their allies, not enemies.