<P> Tourism often concentrates in areas of high natural wealth, causing a serious threat to the habitats of endangered Mediterranean species such as sea turtles and monk seals . Reductions in natural wealth may reduce incentives for tourists to visit . </P> <P> Fish stock levels in the Mediterranean Sea are alarmingly low . The European Environment Agency says that more than 65% of all fish stocks in the region are outside safe biological limits and the United Nations Food and Agriculture Organisation, that some of the most important fisheries--such as albacore and bluefin tuna, hake, marlin, swordfish, red mullet and sea bream--are threatened . </P> <P> There are clear indications that catch size and quality have declined, often dramatically, and in many areas larger and longer - lived species have disappeared entirely from commercial catches . </P> <P> Large open water fish like tuna have been a shared fisheries resource for thousands of years but the stocks are now dangerously low . In 1999, Greenpeace published a report revealing that the amount of bluefin tuna in the Mediterranean had decreased by over 80% in the previous 20 years and government scientists warn that without immediate action the stock will collapse . </P>

What country does not have a coastline along the mediterranean sea