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Brazilian citizen scientists see humpbacks return decades after mass killings

Humpback whales swim at the coast of Ilhabela, state of Sao Paulo, Brazil, on 23rd July, 2023.

Ilha Bela, Brazil Reuters Julio Cardoso leans over the side of a boat to photograph a humpback whale as it slaps its giant tail into the water off Brazil’s south-eastern coast. Like other citizen scientists, as they are known, Cardoso uses the photographs to collect information on the numbers of the marine mammals, helping researchers […]