Environmental activists protested in Mexico City on May 21, 2026 [1], demanding a signed government order to stop the Perfect Day tourism project.

The demonstration targets the coastal ecosystem of Mahahual, Quintana Roo, where activists argue the megaproject poses a significant threat to local biodiversity. A formal, signed resolution is seen as the only way to ensure the project is suspended permanently rather than temporarily.

Protesters gathered in front of the Secretaría de Medio Ambiente y Recursos Naturales, known as Semarnat [1]. The group is seeking a definitive legal decision from the agency to prevent further development in the Mahahual region [2].

Greenpeace and other environmental organizations have joined the call for Semarnat to intervene [3]. These groups argue that the scale of the Perfect Day project exceeds the ecological carrying capacity of the region, potentially causing irreversible damage to the shoreline and marine life [3].

While the activists have previously raised concerns about the project's environmental impact, the current focus is on the lack of a formal, signed document from the ministry [2]. Without such a resolution, protesters said the project could potentially be revived through administrative loopholes.

The protest in the capital serves as a direct pressure tactic to force a response from federal authorities [1]. The activists intend to remain vocal until the government provides a transparent and binding commitment to protect the Quintana Roo coastline [2].

Activists demand a signed resolution from Semarnat to permanently halt the Perfect Day megaproject.

This escalation reflects a growing tension between Mexico's tourism expansion goals and its environmental conservation mandates. By demanding a signed resolution rather than a verbal commitment, activists are attempting to create a legal precedent that protects fragile ecosystems from large-scale commercial development, shifting the conflict from a public debate to a matter of administrative law.