True ... the sea ecosystem can take a lot of misuse and still be rich and interesting ... but not forever ... not even very long I think, especially in the small seas like the Adriatic, that are very rich and varied because of the indented coastline with hundreds of Islands (About 1200 on the Croatian coast) that grants many different depths and great variety of habitats ... but are also sensitive because these are not vast bodies of water like oceans ... the future, when it comes to biodiversity doesn't look particularly good.