If you walk into a nuclear power plant with a pocket of cashew nuts they are naturally radioactive enough to set off the radiation alarm. Many jellyfish are immortal they actually degenerate their adult body reverting back to the polyp (baby) stage and grow up just to do it again and again. No lobster has ever been observed to die of natural causes they are biologically immortal. Lobsters are naturally blue it's the pigment of the krill they eat that makes them red/pink.