Pus is an inflammatory response from infection and contains dead white cells which are immune response cells, dead pathogens such as bacteria or virus which the immune was responding to and broken down tissue cells which is part of a wound healing process that may result in scarring.
No, or at least not yet. there small and dont do much improvment. If they were much bigger and sucked better, including some touch-ups here and there, they would have a bigger effect on removing sea urchins.
The organelle that could b malfunctioning is the mitochondria, which packages proteins and without protein for cells, the outcome is cell lysis, or destruction.
