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Manta ray

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Manta rays are huge, amazing fish that live in warm ocean waters.

Giant oceanic manta ray
Giant oceanic manta ray

They belong to a group of relatives called the Myliobatiformes. This group includes many different types of stingrays. Mantas are special because they have very large brains. In fact, they have one of the highest brain-to-body ratios of all fish. Scientists even found that they can pass a mirror test. This suggests they may have a sense of self-awareness.

Mobula
Mobula

These rays move through the water using wing-like pectoral fins. They are filter feeders, which is a way of eating tiny food. To eat, they swim with their mouths wide open. They use pinkish-brown gill rakers to catch small bits of food. These rakers are like tiny sieves that trap zooplankton. Most of their food comes from deeper parts of the ocean. Sometimes, they swim in a huge circle called a cyclone. This group can have up to 150 mantas swimming together.

Manta birostris feeding
Manta birostris feeding

Scientists have spent a long time studying these creatures. The name "manta" comes from Portuguese and Spanish words for a cloak or blanket. This is because their shape looks like a large piece of fabric. In 1829, Dr. Edward Nathaniel Bancroft published work about these fish. They were once given many different names by researchers. Over time, experts sorted these names out. They discovered that many old names were just different ways to describe the same animal.

MantarayMocheLMC
MantarayMocheLMC

There are three main species of manta rays known today. The largest is Manta birostris, which can reach huge widths in the ocean.

Manta birostris-Thailand4
Manta birostris-Thailand4

The smallest is the reef manta ray, known as Manta alfredi. This species lives in the Indo-Pacific and the tropical East Atlantic. A third species, the Atlantic manta ray, was formally described in 2025. It is called Mobula yarae. These rays can be different colors, too. One rare pink manta ray was even spotted in Australia.

Manta alfredi cruising - journal.pone.0046170.g002A
Manta alfredi cruising - journal.pone.0046170.g002A

Living in the ocean can be a hard job for mantas. They face many threats from humans, such as pollution and fishing nets. Some people also hunt them for their gill plates. Because mantas grow and have babies very slowly, these problems are serious.

Elinkine3
Elinkine3

To stay healthy, they often visit cleaning stations on coral reefs. At these spots, small fish pick parasites off the manta's skin. This helps the manta stay clean and healthy. They may even return to the same cleaning spot again and again.

Manta alfredi at a ‘cleaning station’ - journal.pone.0046170.g002B
Manta alfredi at a ‘cleaning station’ - journal.pone.0046170.g002B
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🖼️ Images & Media (10)
File:Manta birostris-Thailand4.jpg
Manta birostris-Thailand4.jpg
File:Manta alfredi cruising - journal.pone.0046170.g002A.jpg
Manta alfredi cruising -...
File:Manta alfredi at a ‘cleaning station’ - journal.pone.0046170.g002B.jpg
Manta alfredi at a ‘cleaning station’ -...
File:Manta birostris feeding.jpg
Manta birostris feeding.jpg
File:Manta alfredi maldives.jpg
Manta alfredi maldives.jpg
File:Elinkine3.JPG
Elinkine3.JPG
File:Manta birostris-Thailand3.jpg
Manta birostris-Thailand3.jpg
File:MantarayMocheLMC.jpg
MantarayMocheLMC.jpg
File:Mobula.jpg
Mobula.jpg
File:Giant oceanic manta ray.jpg
Giant oceanic manta ray.jpg
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