WATCH: Montenegro's cruise ships are killing their fish

In Montenegro, the growing number of cruise ships using the Bay of Kotor is causing environmental problems.

Yet the city of Kotor relies on the income from mass tourism, unable to bring in more sustainable types of visitors due to a lack of accommodation.

A fisherman and a scientist weigh in on the impact they have witnessed from giant boats swirling around the small bay's creatures with their engines, while a tourism official accounts for the difficult balance between the economy and the environment. 

READ: Take a long trip: Southern Europe's Malta, Greece, Croatia, and Montenegro on a budget

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