Yes, but: Tackling global warming (or agricultural runoff) takes a bit of time and sometimes seems impossible since some folks seriously resist these things. I

Yes, but: Tackling global warming (or agricultural runoff) takes a bit of time and sometimes seems impossible since some folks seriously resist these things. In the meantime, these killing robots still have their place in helping the reef survive. If you have the means to tackle on of the three major threats now, by all means, please do.