A manta ray moving through the ocean can look almost as though it is flying. Its enormous pectoral fins rise and fall like wings while its broad body glides seemingly effortlessly through the water. There is no frantic movement and no obvious rush. Even a manta several yards across can seem strangely weightless.
That graceful appearance has made manta rays some of the most recognizable animals in the sea. Yet their lives are considerably more remarkable than their appearance alone suggests. Mantas are giant filter-feeding rays with unusually large brains, complicated social behavior and distinctive belly markings that allow researchers to recognize individual animals. They travel enormous distances, gather at cleaning stations, follow concentrations of plankton and give birth so slowly that the loss of even relatively small numbers can have serious consequences for a population.
Scientists are still discovering fundamental things about them. In 2025, researchers formally described a third manta species—the Atlantic manta ray, Mobula yarae—after years of evidence that some mantas in the western Atlantic did not quite belong to either of the two species already known to science.
World Manta Day, observed every September 17, is a chance to celebrate this extraordinary branch of the ray family while drawing attention to the fishing, trade and environmental pressures that threaten its future.
🌊 World Manta Day Began in 2020
World Manta Day is celebrated annually on September 17. The Manta Trust launched the first observance in 2020 as an international celebration of manta and devil rays and an opportunity to raise awareness about the threats facing them.
Since then, researchers, conservation organizations, dive communities, aquariums, schools and wildlife enthusiasts around the world have used the day to share manta research and encourage greater protection for these enormous but vulnerable fish. The observance itself is relatively young, but manta rays belong to an evolutionary story stretching back millions of years.
🐟 Manta Rays Are Fish
Despite their size and remarkably expressive appearance, manta rays are fish. More specifically, they are cartilaginous fish, placing them in the same broad group as sharks, skates and other rays. Instead of a skeleton made primarily of bone, their internal framework is composed largely of cartilage.
Their flattened bodies and broad pectoral fins are characteristic of rays, but mantas are adapted for life swimming through open water rather than spending most of their time resting on the seafloor. Those huge fins produce the unmistakable flying motion that makes a manta underwater look almost like a bird moving through the sky.
At the front of the head are two unusual structures called cephalic lobes. When a manta is traveling, these lobes can be partly rolled. When it feeds, they unfurl and help guide plankton-rich water toward the mouth.
Early sailors sometimes thought the hornlike structures looked sinister, helping inspire old names such as “devilfish.” The animal behind the nickname is anything but a sea monster.
🔬 Scientists Now Recognize Three Manta Species
For years, scientists generally recognized two species of manta ray. The reef manta ray, Mobula alfredi, tends to be associated with reefs, islands and productive coastal habitats, while the oceanic manta ray, Mobula birostris, grows larger and spends more of its life traveling through open ocean.
Then there were some unusual mantas in the Atlantic.
Researchers had noticed for years that these animals differed from typical oceanic mantas in coloration, morphology, habitat use and genetics. Evidence gradually accumulated until scientists formally described the Atlantic manta ray, Mobula yarae, as a separate species in 2025.
Atlantic mantas occur along the Atlantic coasts of the Americas and around the Caribbean. They resemble oceanic mantas closely enough that the two had long been grouped together, demonstrating how much remains to be discovered even about enormous animals living relatively close to heavily populated coastlines.
The discovery matters for conservation as well. If animals thought to belong to one widespread species actually represent separate species with smaller geographic ranges, each population may require more specific protection.
🪽 Mantas Include the Largest Rays in the World
Oceanic manta rays are the giants of the ray world. Exceptional individuals can approach about 23 feet across, and the largest reported animals have reached even greater widths.
Imagine an animal wider than many rooms gliding silently overhead. Its size can be startling underwater, particularly because manta rays rarely move in the abrupt way we might expect from such an enormous creature.
They appear to fly.
Reef mantas are generally smaller but can still reach impressive dimensions. The newly recognized Atlantic manta is also a very large ray. Yet size alone does not make manta rays extraordinary. Their biology repeatedly turns out to be more complicated than expected.
🧠 Manta Rays Have Remarkably Large Brains
Manta rays possess the largest brains of any fish by absolute size. Their brains are also relatively large for their bodies compared with many other fishes, which has contributed to scientific interest in manta cognition and behavior.
Researchers have documented complex social interactions, curiosity and sophisticated movement patterns. Mantas have even been observed responding to mirrors in unusual ways.
One experiment involving captive mantas prompted researchers to suggest that the animals might recognize themselves. That interpretation remains controversial, however, because behaviors seen near mirrors can also resemble normal manta social behavior. The experiment did not settle the question of manta self-awareness, but it reinforced something researchers already suspected: manta behavior deserves serious study.
Rather than asking whether mantas think exactly like humans, dolphins or primates, scientists are increasingly interested in understanding how manta intelligence evolved for a very different kind of life. Navigating enormous stretches of ocean, remembering important feeding areas, recognizing social partners and responding to changing marine conditions may require forms of cognition that humans are only beginning to appreciate.
🦐 Giants That Eat Tiny Food
A manta ray may be enormous, but its favorite meals are tiny. Mantas are filter feeders that consume zooplankton and other small organisms suspended in seawater.
When feeding, a manta opens its mouth and uses its cephalic lobes to direct food-rich water inward. Water passes across specialized filtering structures associated with the gills while plankton is retained and swallowed.
Finding enough microscopic prey to sustain such a large animal requires remarkable efficiency. Mantas often concentrate in locations where tides, currents and upwelling gather plankton into dense patches.
At especially productive feeding sites, groups of mantas may perform spectacular coordinated movements. They can swim in chains, circle through concentrated food or repeatedly somersault through the water so they can pass through the same rich patch of plankton again and again.
In places such as Hanifaru Bay in the Maldives, large aggregations sometimes develop into a formation known as cyclone feeding, with numerous mantas circling together around concentrated prey. For animals often imagined as solitary wanderers, feeding can become surprisingly social.
🪪 Every Manta Has Its Own Spot Pattern
Turn a manta ray over and you may see something extremely useful to a scientist. The dark markings on the underside are individually distinctive.
Much like a human fingerprint, a manta’s ventral spot pattern can allow researchers to distinguish one animal from another. Scientists photograph these patterns and compare them with existing identification databases. When the same manta appears again months or years later, researchers can learn where it has traveled, how often it returns to a location and which animals tend to appear together.
This makes ordinary photographs scientifically valuable. Divers and snorkelers have contributed thousands of identification images to research programs, turning recreational encounters into citizen-science observations.
A photograph of a spotted belly may therefore reveal years of an animal’s life.
🧼 Manta Rays Visit Cleaning Stations
Mantas visit particular areas of reef where small cleaner fish pick parasites and other material from their skin and around sensitive areas such as the gills. These places are known as cleaning stations.
Instead of simply swimming through, a manta may slow down or hover while the cleaners go to work. Some cleaning stations are visited repeatedly over long periods and can become important locations for scientists studying individual animals.
They are also places where mantas may encounter one another. Research increasingly suggests that manta social life is not merely a collection of random meetings between solitary animals. Some individuals form repeated associations, and particular locations may function as gathering places within a much larger social landscape.
An apparently ordinary patch of reef can therefore hold tremendous importance to animals capable of ranging across vast stretches of ocean.
🌍 Some Mantas Travel Far While Others Stay Close to Home
The phrase “manta ray” can evoke an animal endlessly cruising across the open ocean. For some mantas, that image is appropriate.
Oceanic mantas can travel enormous distances and make deep dives while searching for food. Reef mantas can behave quite differently, with many maintaining strong connections to particular islands, reef systems and feeding areas.
Research has shown striking site fidelity in some reef manta populations, even though the animals are physically capable of traveling much farther.
That difference illustrates why manta conservation cannot rely on a single strategy. A highly migratory oceanic manta may cross numerous political boundaries and require international cooperation. A reef manta that repeatedly returns to the same bay may depend heavily on protection of one small but critically important habitat.
Both need ocean conservation, but they need it at different scales.
🌌 Mantas Can Dive Into the Deep Ocean
Mantas are often photographed near sunlit reefs and tropical islands, but some spend a surprising amount of time far below the surface. Oceanic mantas can descend hundreds of meters while searching for prey in deeper water.
Satellite tagging has transformed what researchers know about these movements. A manta may appear at a familiar surface aggregation site, disappear into open water, dive deeply and later return to productive coastal areas.
That creates an enormous challenge for scientists. Much of a manta’s life happens where no diver can follow.
Tags, underwater cameras, genetic analysis and photo-identification provide glimpses of an existence that remains largely hidden. Even animals several meters across can disappear remarkably effectively into an ocean.
💕 Manta Courtship Can Become a Chase
Manta courtship sometimes involves one of the most spectacular behaviors researchers observe. A female may swim rapidly while one or more males follow closely behind, forming what researchers often call a courtship train.
Additional males may join, and the group can twist through the water as potential mates follow the female’s movements for extended periods.
Scientists have documented increasingly detailed sequences of manta reproductive behavior, but many aspects remain difficult to observe because the animals range widely and mating events are comparatively rare.
Reproduction is one of the most important pieces of manta conservation because mantas do not reproduce quickly.
👶 Manta Rays Have Very Few Young
Many fish compensate for heavy juvenile mortality by producing enormous numbers of eggs. Manta rays follow almost the opposite strategy.
Females generally produce a single pup at a time after a lengthy pregnancy, and years may pass between successful births. The developing young receive nourishment inside the mother’s reproductive tract rather than hatching externally into the sea.
A newborn manta is already relatively large, but even large babies do not solve the fundamental demographic problem. Mantas grow slowly, mature relatively late and reproduce infrequently.
That means populations cannot quickly replace adults removed by fishing.
If a rapidly reproducing fish population loses a significant number of individuals, surviving animals may sometimes produce enough offspring for numbers to rebound relatively quickly under favorable conditions. Mantas do not have that biological option.
Their slow life strategy makes every mature animal unusually important.
🎣 Fishing Is One of the Greatest Threats
Commercial fishing remains one of the most serious threats facing manta and devil rays. Some have historically been targeted deliberately, particularly for their gill plates, while others become unintended bycatch in fisheries aimed at tuna and other species.
Large bodies do not protect mantas from fishing gear. Their broad fins can become entangled in nets and lines, and their enormous movements may bring them through heavily fished areas.
The problem is intensified by slow reproduction. A fishery does not need to remove enormous numbers of mantas for the effect to become significant. Even comparatively modest mortality can exceed the reproductive capacity of small populations.
That is why conservation measures that reduce fishing deaths can make such a large difference.
🌐 International Protection Took a Major Step Forward
Manta conservation reached an important milestone in November 2025 when countries participating in the Convention on International Trade in Endangered Species of Wild Fauna and Flora, or CITES, voted to transfer manta and devil rays to Appendix I.
The decision prohibits international commercial trade in manta and devil ray products and represents the strongest level of international commercial-trade protection available under the convention.
That matters because demand for mobulid gill plates had contributed to targeted fisheries and international trade.
It does not mean manta rays are suddenly safe. CITES regulates international trade. It cannot by itself prevent every accidental capture, illegal fishing, habitat disturbance or local threat.
But reducing the commercial market for vulnerable animals removes an important source of pressure. Conservation rarely depends upon one dramatic solution. It is usually the cumulative effect of many protections working together.
⚠️ Manta Species Face Serious Conservation Pressure
The oceanic manta ray is classified as Endangered on the IUCN Red List, while the reef manta ray is classified as Vulnerable. The Atlantic manta ray is so newly recognized that scientists are still establishing the broader conservation picture for the species.
Those labels are reminders that a huge geographic range does not necessarily equal safety. Oceanic mantas occur across tropical, subtropical and some temperate waters around the world, yet populations can be widely separated.
Some regional groups appear relatively small, while a particularly large population has been documented along Ecuador and Peru.
Losing a local manta population does not guarantee that another population will simply move in and replace it.
🌡️ Climate Change Can Alter a Manta’s Food Supply
Manta rays depend upon plankton, and plankton depends upon ocean conditions. That makes mantas indirectly sensitive to changes in water temperature, currents, productivity and nutrient availability.
Climate-driven changes can influence when and where plankton blooms occur, potentially altering feeding opportunities manta rays have relied upon.
Coral reef degradation can create additional problems for reef mantas by changing habitats associated with cleaning stations and aggregation areas. Extreme weather may affect manta behavior as well.
Animals are not passive in the face of environmental change. They can respond, move and adapt.
The question is whether change happens within the limits their biology can tolerate.
🚤 Tourism Can Help Mantas or Disturb Them
People will travel extraordinary distances for the chance to see a manta ray. That has created valuable wildlife-tourism industries in places such as the Maldives, Indonesia, Hawaii, Mexico and other manta hotspots.
Responsible manta tourism can provide a strong economic reason to keep the animals alive. A manta that can be watched by divers year after year may generate far more long-term economic value than one removed from the ocean.
Tourism can also create problems when poorly managed. Crowded boats, swimmers blocking feeding paths, touching animals, chasing mantas and excessive disturbance around cleaning stations can interfere with natural behavior.
Good wildlife encounters therefore require restraint. The goal should be to enter the manta’s world without forcing the manta to accommodate ours.
✋ Manta Rays Should Not Be Touched
A manta swimming close to a diver may appear curious, and some individuals voluntarily approach humans. That does not make touching appropriate.
Wildlife-viewing guidelines generally emphasize allowing mantas to control the encounter. Divers and snorkelers should avoid chasing, grabbing, riding or deliberately blocking the animals.
The best manta interaction is often surprisingly passive. Stay calm, give the animal space and let it decide whether to come closer.
Watching an enormous wild manta choose to glide overhead is considerably more remarkable than forcing an interaction for a photograph.
🦈 Mantas Are Relatives of Sharks
The resemblance may not be obvious, but mantas and sharks belong to the same broader group of cartilaginous fishes.
Their ancestors diverged into extraordinarily different forms. Some sharks evolved into fast predators armed with rows of cutting teeth, while mantas became enormous plankton feeders with winglike fins.
Their closest relatives are other mobulid rays, including devil rays. Collectively, manta and devil rays are known as mobulids.
Modern research has revealed just how diverse this family can be, from relatively small devil rays to enormous oceanic mantas.
The newly described Atlantic manta demonstrates that even the basic family tree is still being refined.
🧬 The Discovery of Mobula yarae Changed the Manta Family Tree
The formal recognition of the Atlantic manta ray in 2025 was more than a new name added to a list.
Researchers had been investigating the animals for years, studying photographs, body proportions, coloration, anatomy and genetics.
A specimen found in Florida became especially valuable because scientists were able to conduct detailed anatomical and genetic comparisons that would have been impossible from photographs alone.
The accumulated evidence showed that the Atlantic animals represented a distinct evolutionary lineage.
Scientists named the species Mobula yarae after Yara, a water spirit from Indigenous Brazilian tradition.
The discovery provides a remarkable reminder of how little of the ocean has been completely catalogued. An animal wider than a car can live along the coast of the United States for generations and still have its scientific identity hiding in plain sight.
🔭 We Still Know Surprisingly Little About Manta Rays
The new species is hardly the only manta mystery.
Scientists are still learning how populations connect across oceans, how long individuals live, how social relationships develop, how females choose mates, where important nursery habitats are located and how changing oceans will alter feeding patterns.
Even population size can be difficult to determine. Mantas do not line up to be counted.
Researchers instead combine photographs, tagging data, genetics, sightings, fisheries information and statistical models.
Some individual mantas become familiar figures within long-running research projects because scientists have followed them for years. Others may be photographed once and never seen again.
Every observation adds another piece to a remarkably incomplete picture.
📸 Ordinary People Can Help Manta Research
You do not necessarily need a marine biology degree to contribute useful manta data.
Photo-identification programs allow divers, snorkelers and photographers to submit images showing the underside of manta rays. If the spot pattern can be identified clearly, researchers may be able to match the animal to an existing record.
A tourist photograph can reveal that a manta has returned to the same location. It might document a new injury, connect two locations previously thought to support separate populations or identify an entirely new animal.
Citizen science is particularly valuable for creatures spread across enormous ocean regions where professional researchers cannot possibly be present every day.
The millions of people carrying underwater cameras effectively create an informal observation network. Used responsibly, a vacation photograph can become a data point.
🌊 Protecting Mantas Means Protecting Important Ocean Places
Manta conservation is not simply about protecting individual rays. Certain locations repeatedly draw mantas because they offer something important.
A bay may concentrate plankton. A reef may contain a valuable cleaning station. A coastal area may function as nursery habitat. An offshore island may provide a predictable seasonal feeding ground.
Protecting those sites can have an outsized effect.
Hanifaru Bay in the Maldives is one well-known example. Seasonal conditions can concentrate so much plankton in the bay that large numbers of reef mantas arrive to feed.
Researchers, conservationists and local authorities have worked to manage tourism there because allowing unlimited activity around such an important feeding area could undermine the very wildlife spectacle that attracts visitors.
Knowing where animals go is therefore only the beginning.
The next question is whether we can keep those places functioning.
🎉 How to Celebrate World Manta Day
World Manta Day does not require living beside a tropical reef. Begin by learning about the animals themselves.
Explore the differences between reef, oceanic and Atlantic mantas. Look at photographs of belly markings and see whether you can distinguish individuals. Watch footage of somersault feeding or a cleaning station and pay attention to how precisely the animals move.
If you dive or snorkel in manta habitat, choose operators that follow responsible wildlife-viewing practices and support local conservation. Avoid purchasing wildlife products derived from threatened rays, and support marine organizations whose work includes scientific research, fisheries reform, habitat protection and community education.
Teachers and families can use manta rays to explore topics ranging from plankton food webs and animal migration to citizen science and the challenges of studying the open ocean.
Most importantly, share accurate information.
Mantas do not need myths about sea monsters or exaggerated claims about intelligence to make them fascinating.
The truth is already remarkable.
💙 Why Manta Rays Matter
Manta rays occupy an unusual place in ocean conservation. They are enormous enough to inspire awe yet dependent upon some of the smallest organisms in the sea. They can cross great distances yet return repeatedly to one particular reef. They possess unmistakably individual markings, allowing scientists to follow lives that would otherwise disappear into the blue.
Their slow reproduction makes them vulnerable, but their popularity creates opportunities for conservation through research, tourism and international cooperation.
They also remind us how unfinished our understanding of the ocean remains. In 2025, scientists added a third manta species to a group containing some of the largest and most recognizable fish on the planet.
That discovery should make us wonder what else remains unnoticed.
On World Manta Day, September 17, there is plenty to celebrate: extraordinary biology, new discoveries, international conservation progress and the people working around the world to understand these animals.
But the most remarkable sight remains a simple one. A wild manta stretches its enormous fins, catches the water and, with a few slow movements, an animal weighing hundreds or even thousands of pounds seems to fly.
🔗 Related Articles
- World Dolphin Day: Celebrating Dolphins & Protecting Their Future
- World Lion Day: Inside the Lives of Africa’s Iconic Big Cats
- World Elephant Day: Fascinating Facts About Elephants & Why They Need Protection
- International Red Panda Day: Inside the World of the Endangered Red Panda
📚 Sources & Further Reading
- Manta Trust — World Manta Day & Our Impact
- Manta Trust — What Are Mobulid Rays?
- Manta Trust — Oceanic Manta Ray
- Manta Trust — Atlantic Manta Ray
- NOAA Fisheries — Giant Manta Ray
- Smithsonian Ocean — The Newly Discovered Atlantic Manta Ray
- Manta Trust — Historic CITES Appendix I Protection for Manta and Devil Rays
- Manta Trust — MantaBase Citizen Science Project
