''So you think some corals are more desirable than other''
yes
but, moreso I think that the best the GBR etc can be described as is that it's a complex situation
which is a pretty simple leap of logic when one considers that the GBR can be seen as a living entity -------
and what we know about large organisms is that they are complex.
take a human - better still, take a physically high performance human - what one finds is that the body is never 100% - not ever. There's always something wrong
bit like a complex modern car - with a LOT of options and complexity - how often is everything working perfectly? well ------------ pffffffffffffffffft. Lotsa luck there
Take an example of the greatest displays in history -
if you looked at the performance --------- you saw one thing. If you looked at the body, you saw another
and if you looked at the feet - my god, you saw another completely different picture
just image what those feet went through in 50 years of performance?
