- Slow-moving, peaceful and curious, manatees quietly maintain the health and balance of aquatic ecosystems, from rivers to bays and coasts worldwide.
- Manatee Appreciation Day is observed annually on the last Wednesday of March, and it’s a good time to remember why these animals matter, and the people who have dedicated their lives to protecting them.
- “The gentle giants of our oceans have survived for millions of years. Whether they survive the next century depends on all of us,” a new op-ed argues.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.
Along the warm waters of Mexico’s Caribbean coast lives a creature so gentle that sailors once mistook it for a mermaid. Slow-moving, peaceful and curious, manatees have glided through rivers and coastal lagoons for millions of years, long before humans ever set foot on these shores. On Manatee Appreciation Day, it’s worth remembering not only why these animals matter, but also the people who have dedicated their lives to protecting these gentle giants.
One such story begins in Chetumal, a coastal city in Mexico’s Yucatán Peninsula whose name in the Maya language means “the place where the rains come down.” It is here that a scientist named Dr. Benjamín Morales devoted decades of his life to studying and protecting manatees.
In 2003, a newborn manatee calf washed ashore in Laguna Guerrero near Chetumal. He had just been born and had already lost his mother. The calf was weak, alone and unlikely to survive.
Dr. Morales stepped in without hesitation, and he named the calf Daniel.
Daniel was taken to a small research facility where Morales and a group of students and volunteers nursed him back to health, feeding him from bottles day and night. What began as a rescue soon became something deeper: a bond between human and animal built on patience, trust and care.
Over the years, Daniel grew into a full-sized manatee with an unmistakable personality. Like many of his species, he had an expressive face and a disarming smile, exposing his massive molars and inviting anyone nearby to smile back.
Manatees are sometimes called “sea cows,” but that description hardly captures their charm. These herbivorous marine mammals are more closely related to elephants than cattle. They are peaceful travelers of warm waters, feeding on aquatic plants and quietly maintaining the balance of coastal ecosystems.
In fact, manatees play a vital role in the health of our waterways. By grazing on underwater vegetation, they help control excessive plant growth in rivers, lagoons and coastal channels. In doing so, they support water quality, maintain navigation routes and help sustain fisheries that communities rely on.
Protecting manatees is not just about protecting wildlife — it is about protecting the ecosystems that sustain human life.
For years, Daniel lived in a protected lagoon where scientists and conservationists monitored his health and behavior. Eventually, in 2016, Dr. Morales opened the gates and allowed Daniel to return to the wild.
But Daniel had grown accustomed to human companionship. Sometimes he leaves for days, weeks or even months, but he always returns.
For Morales, each return brings a mixture of pride and melancholy — much like a parent watching a grown child leave home, while secretly hoping they will visit again.
Their story is more than a touching tale of a rescued animal. It is a reminder that conservation is ultimately about relationships between people and nature, between science and compassion.
Manatees once faced relentless hunting across the Americas. Today, their biggest threats include boat strikes, habitat loss, pollution and climate change. Across many regions, populations remain fragile.
But there is also reason for hope.
Thanks to the efforts of numerous scientists, local communities, conservation organizations like the Mexican Habitat Association for the Interaction and Protection of Marine Mammals, and corporate partners like Vulcan Materials Company, manatee populations in places like Chetumal Bay are slowly recovering. Roughly 150 manatees now inhabit these waters, a testament to decades of dedicated research and protection.
Still, their survival depends on continued vigilance.
Around the world, thousands of conservationists dedicate their lives to protecting wildlife: from jaguars in tropical forests to sea turtles along coastal beaches, from whale sharks in open oceans to birds migrating across continents.
These people understand something essential: protecting biodiversity is not just an environmental issue. It is a human responsibility.
When we safeguard wildlife, we preserve the natural systems that provide food, water, economic stability and cultural identity for communities everywhere.
On Manatee Appreciation Day, let Daniel’s story remind us that conservation is not abstract policy; it is personal. It happens through everyday choices, through scientific dedication and through the quiet determination of people who refuse to give up on the natural world.
The gentle giants of our oceans have survived for millions of years. Whether they survive the next century depends on all of us.
Omar Vidal is a scientist and conservationist, was a university professor in Mexico, is a former senior officer at the U.N. Environment Programme, and the former director-general of the World Wildlife Fund-Mexico.
Banner image: Manatees boost the health of freshwater and also marine ecosystems, like this one off the coast of Quintana Roo, Mexico. Image courtesy of Jorge Zamora.
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Researcher discovers new role played by manatees, ‘the gardeners of the Amazon’
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