Daniel Camilo Thompson Póo —conservation lawyer and consultant for Cuidando los Mares de México— recounts from the sailboat Timshel the expedition that confirmed, for the first time in the wild with underwater ultrasound, the gestation of giant manta rays (Mobula birostris) inside Mexico's Revillagigedo National Park. A chronicle of permits, sharks, volcanoes and a manta named "Abuelita" who changed his understanding of environmental justice.

The El Sargento Ejidal Trail Park is a conservation project in Baja California Sur in which the ejido chooses to protect its land through an ecological easement. For 20 years, these lands are dedicated to nature and community use, preventing urban development. It is a model that shows conservation can also be a form of development, generating benefits for both the community and the environment.