Featuring voice recordings from celebrities like Lupita Nyong’o and Julia Louis-Dreyfus, an online photo gallery published today profiles 20 clean-water activists who have fought and won significant court battles in sites around the world. The “Waterkeeper Warriors” photo project celebrates the 20th anniversary of the Waterkeeper Alliance, a global nonprofit that focuses on increasing accessibility to clean water. To produce the portfolio, the nonprofit group teamed up with the travel site and app Culture Trip, which sent photographers to shoot portraits of Waterkeeper ambassadors in San Francisco, the Bahamas, Colombia, Senegal, and many more locales. The activists include Casi Callaway, who sued her local government in Alabama over violations of the Clean Water Act, and Rachel Silverstein, who fought against the expansion of Florida’s PortMiami.