In 2010, the year designated by the United Nations as “The International Year of Biodiversity,” Cortada developed “Endangered World: Biscayne National Park.” The initiative brought together South Floridians from all walks of life to become part of an outdoor installation displayed at the park’s Convoy Point Headquarters from Valentine’s Day to May 1, 2010.

For over a mile, 360 brightly colored flags lined the roads and trails at Convoy Point, each representing one degree of the planet’s longitude. Individuals and organizations adopted an endangered or threatened animal that lives at that longitude and painted an image of that animal on one of the flags. At the same time, participants committed to an “eco-action” that directly or indirectly mitigated the plight of that animal. The eco-actions were gathered and published in a blog online, and the flags were on display for the 10 weeks leading up to BioBlitz, National Geographic’s 24-hour species count of as many living things as possible in Biscayne National Park.