Tide Calendar 2021
The theme for our 2021 Tide Calendar is Biodiversity Nourishes Us. The tide calendar for the northern Gulf of California was originally published in 1967 by the University of Arizona. In the early 2000s, CEDO took over this tradition, keeping alive the legacy of Professor Emeritus Dr. Donald A. Thomson
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The theme for our 2021 Tide Calendar is Biodiversity Nourishes Us. Biodiversity (genes, species, and ecosystems) is our main source of food, clothing, medicines, furniture, materials—everything that sustains us—and provides many other environmental goods and services on which the well-being of humans depends.