A silent war is taking place off the coast of Brazil. Overgrown algae and seaweed are threatening the coral reefs. But Brazilian scientists have found a species that plays an integral role in keeping a balance between them: the blue parrotfish.
The collapse of fisheries, decline of coral reefs and drought are all hitting Madagascar hard. But fishermen are coping with scarce and stressed resources in the Indian Ocean by coming up with new alternatives.
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