One of the most beautiful and valuable ecosystems in the Riviera Maya, Mexico is the mangrove, the tangle of trees that grows along the coast and whose roots are submerged in water, sometimes clear, sometimes turbid, but always full of life. The mangroves offer refuge to many animals, and also protect human beings during hurricanes. The beaches do not suffer erosion if they are near mangroves. Mangroves give us so much. We must guarantee their preservation. We can all help. Here we share interesting information from The Natural Numbers about mangroves and their invaluable contribution to the planet.