Manta rays, often referred to as "devils Hartley and swimming in the ocean, are among the most majestic creatures of the deep. But how do they compare in size to humans? Let's take a closer look.
To truly comprehend the size of a manta ray compared to a human, we first need to understand the dimensions of both. This will allow us to draw a fair comparison and appreciate the sheer majesty of these underwater giants.
Size of an Adult Manta Ray
Manta rays, belonging to the genus Manta, are the largest rays in the world, with some species attaining considerable sizes. The twomost common species are the giant manta ray (Manta birostris) and the reef manta ray (Manta alfredi).
The giant manta ray holds the record for the largest of the two species, with wingspans reaching up to 7.6 meters or 25 feet. In comparison, the reef manta ray has a slightly smaller wingspan, typically ranging from 4 to 5.5 meters or 13 to 18 feet.
Weight and Body Size
The weight of a manta ray is not as commonly measured as its wingspan, but it's worth noting that these rays can weigh up to 1,300 kg or 2,866 lbs. This might seem light considering their size, but it's important to keep in mind that wings are much less dense than other parts of the body.
In comparison with a human, consider that the average human male weighs around 79 kg or 174 lbs, while the average human female weighs around 64 kg or 141 lbs. Therefore, a single manta ray could contain the equivalent of 17 to 20 human adults.
Wingspan Relative to Human Height
To better understand the size difference, let's compare the wingspan of a manta ray to the average human height. The average human male is approximately 1.71 meters or 5 feet 7 inches tall, while the average female stands at about 1.58 meters or 5 feet 2 inches.
A giant manta ray's wingspan, at about 7.6 meters or 25 feet, would dwarf even the tallest human. In terms of human 'feet', a manta ray's wingspan can be as high as 18-20 feet - roughly equivalent to two six-foot tall humans standing back-to-back.
Manta Ray to Human Proportion Comparison
We know that manta rays have impressive wingspans, but how do they stack up in terms of body proportions? Humans are often compared to a rectangle when looking at their height and width.
The average human has a width-to-height ratio of about 0.31, meaning their height is roughly three times their width. Now, let's look at a manta ray's proportions. A manta ray's wingspan (width) to body length (height from the schnorkel to the tail) ratio is approximately 0.37 - meaning their wingspan is slightly more than three times their body length.
The pectoral fins: Manta Ray " Wings "
Manta rays' pectoral fins, often referred to as 'wings', can account for up to 90% of their total body length. In a reef manta ray, for instance, these 'wings' can be roughly 4 to 5.5 meters (13 to 18 feet) long, while the body can be around 0.4 to 1 meter (1.3 to 3.3 feet) long.
In humans, the two legs (taking the place of a manta ray's pectoral fins) account for approximately 35-40% of an adult's total height. This means manta rays have 'wings' that are roughly two times larger compared to a human's legs.
Fin Movement: Manta Ray " Flight "
Manta rays' bodies are rigid and not very maneuverable, almost like a glider. They use their massive pectoral fins to steer and propel themselves through water. This movement has been compared to a bird's flight, earning them the name 'devil fish'.
Despite their size and flight-like movement, manta rays are gentle giants. They are filter feeders that ingest tiny plankton and small fish. Unlike many sharks, manta rays have no real predators - demonstrating the safety of these massive yet vulnerable creatures.
That leaves us wondering: as human explore our watery world, have we done nearly enough to protect these graceful underwater acrobats? Let's work together to ensure that future generations can appreciate the beauty of manta rays in all their five-story wingspan glory.