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Humans and Nature -
Water Pollution -
Hank the Crab talks about Ria Formosa's Pollution -
Hank the Crab talks about Ria Formosa's Pollution -
Hank the Crab talks about Ria Formosa's Pollution -
Hank the Crab talks about Ria Formosa's Pollution -
Hank the Crab talks about Ria Formosa's Pollution -
Fish at Sea -
Polluted Water