THE CASPIAN SEA, HAVING MORE THAN 850 ANIMAL SPECIES, 500 PLANT SPECIES, AND 400 EXCLUSIVE LIVING SPECIES, HAS BEEN CONSIDERED AS THE LARGEST LAKE IN THE WORLD RESTRICTED BY FIVE COUNTRIES. IT HAS UNIQUE CHARACTERISTICS WHICH PROPOSE IT AT WORLD SCALE FROM CULTURAL, SCIENTIFIC, ECONOMIC AND TOURIST ATTRACTION DIMENSIONS. IN THE RECENT AGE, THIS ECOSYSTEM HAS BEEN ATTACKED AND SERIOUSLY DESTRUCTED AND IF THE DAMAGE SPEED WON’T BE STOPPED OR DECELERATED, IT WILL CAUSE IN COMPLETE DESTRUCTION. RELEASING MORE THAN ONE MILLION TONS OF OIL IN THE RECENT DECADE, THE INFLUX OF 1620 TONS OF TOXIC METALS BY THE VOLGA RIVER, AND DECREASE OF FISHING VARIOUS FISH SPECIES SPECIALLY STURGEON FROM THIRTY THOUSAND TONS IN 1985 TO 5672 TONS IN 1995 ARE SOME OF THE INDEXES OF CASPIAN SEA DESTRUCTION PROCESS. ABUNDANT TOURIST ATTRACTIONS IN CASPIAN SEA COASTS ARE GOOD OPPORTUNITIES WHICH, OTHER THAN PROMOTING THE PLACE OF IRAN IN THIS INDUSTRY, HELP IN SURVIVAL OF ORGANISMS WHICH ARE SUBJECT TO EXTINCTION, PREVENTING THE ENVIRONMENT DESTRUCTION, PROMOTING THE ENVIRONMENTAL CULTURE, PRESERVING THE HEALTH, PROMOTING THE ECONOMIC CONDITION AND PREVENTING MORE DESTRUCTION OF THIS UNIQUE ECOSYSTEM WITH SCIENTIFIC AND FUNDAMENTAL PLANNING IN ACCORDANCE WITH THE ECOtourism PURPOSES.