I read this post last night, but felt that I should have time to calm down before I replied (nothing do with the DB member that posted it)
As far as the Lionfish being an invasive species they have nothing on human kind, we are by far the most invasive species on this plant. There are over 1200 venomous fish in our oceans, should will kill them all, also there are no know fatalities caused by lionfish stings
Whether this species is endemic or not, some forget a little thing called evolution, it is all part life and when the conditions are right for a species to migrate then it will happen.
As a diver I am entering into a world that is not my home, I fell privileged that I can experience all that our underwater world has to offer, as divers we should have the greatest respect for the environment we find ourselves in and leave the oceans in the same state as when we entered the water, it’s not our home
If we killed everything in the oceans that could harm us there would be little point in diving, there would be nothing to see.
A better use of the DM would be to send him down to drag a diver back to the boat/shore that is causing harm to the environment, whether this is killing fish or braking lumps of delicate corals
Rant over
Mo