animal
aquatic
atherina
black sea
blooming water
contaminate
contaminated
danger
dangerous
dead
dead zone
death
death fish
decay
dirty
disaster
ecological
ecology
ecosystem
environmental problem
eutrophication
eutrophication of waters
fish
food
harmful
hazard
hypoxia
kotor
lake
mass death
nature
pollute
polluted
pollution
pollution of reservoirs
problem
river
rotten
smell
stink
tiligul estuary
toxic
ukraine
waste
water bloom
water body contamination
water pollution
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