Well it seems that if it is not coming out of your pocket book and you have NO first hand experience you should not give the advise. They are like LAWN MOWERS and WILL eat everything down to white rock. You will have a white line across every rock it has been.
You book smart people have no clue about INDIVIDUALITY of the marine world. Alot more is possible than just words. ( it is all not FACTS, its theory too)