An oceanic bay in Rio de Janeiro, Brazil, shaping city life and biodiversity.
Humpback whales have surged from about 2,000 to 35,000 in roughly 40 years, drawing them into Rio’s Guanabara Bay. Tours with biologists onboard have grown, while researchers study migration patterns and the Abrolhos Bank habitat. A scientific expedition runs June 26–July 9 to map behavior and routes.