It is a shame but I think it is also beacuse of other things. For example, on my last livaboard in the Similan I saw that what was left from our breakfeast/lunch/diner ended out in sea. The instructor told us that this is prohibited but they know to differ what is ok to throw and what is not.
In addition, the amount of bad behaving divers in the dive sites just killes or push the fish out of there. You can also see marks on the mantas from divers that touch them and therefore killing them on the long term.
In addition, the amount of bad behaving divers in the dive sites just killes or push the fish out of there. You can also see marks on the mantas from divers that touch them and therefore killing them on the long term.