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Are Sauropods Bigger Than Blue Whales? See The Proof: Sauropod Dinosaur VS Whale Size

Are Sauropods Bigger Than Blue Whales? The hushed galleries of natural history museums are akin to time portals, where the bones of sauropod dinosaurs stretch towards the sky, dwarfing awestruck onlookers. Their sheer magnitude challenges the imagination, compelling us to compare them with the largest animal alive today—the majestic blue whale. The comparison ignites a fascination deep within our minds, as we yearn to understand the scale of life that once was and that which thrives in our oceans now. The sauropods are the biggest land animals to have ever lived, but how do they stack up against blue whales?


Are Sauropods Bigger Than Blue Whales?

Sauropods can’t beat the largest animal on earth: the blue whale (Balaenoptera musculus). Blue whales weigh over 130 tons more than the weight of giant sauropods. However, some sauropods can have longer lengths than blue whales.

Key Takeaways

  • Blue whales, surpassing sauropods in weight, reveal contrasts between epochs in natural history.
  • Blue Whale’s marine adaptability contrasts with Jurassic Brachiosaurus, highlighting diverse physiological marvels across species.
  • Argentinosaurus, among the largest sauropods, showcases evolution’s impact on land-dwelling giants’ structure.
  • Sauropods like Argentinosaurus evolved sturdy skeletons for land, while blue whales adapted streamlined bodies for aquatic efficiency.
  • The blue whale, Earth’s largest animal, has a heart the size of a Volkswagen Beetle.
  • Blue whales’ gigantism is partly due to lunge feeding, enabling consumption of vast prey quantities.

Juxtaposing the colossal beings of different epochs of natural history – the land-bound sauropods from Jurassic and Cretaceous periods, and the water-dwelling blue whales of the present era – reveals fascinating contrasts.

Sauropods dominated land ecosystems during the Mesozoic era, while Blue Whales currently reside in modern oceans. Dinosaurs, a vast group containing Sauropods, flourished in ancient periods, contrasting with mammals like the Blue Whale present in contemporary times.

Paleontology, studying fossils, suggests Sauropods might rival the size of living Blue Whales. Marine Biology, focusing on living sea creatures, acknowledges the Blue Whale’s title as today’s largest animal. Size comparison between Sauropods, such as the colossal Argentinosaurus, and Blue Whales sparks intrigue. Regarding Animal Physiology, the Blue Whale, scientifically named Balaenoptera musculus, showcases remarkable adaptability to marine environments.

Patagotitan, another behemoth Sauropod, challenges previous size estimations with its recent discovery. Land Animals, represented by the riveting Brachiosaurus and the elongated Diplodocus, contrast sharply with Sea Creatures like the Blue Whale. Apatosaurus, hailing from the Jurassic period, illustrates the diversity of Sauropod giants. Cretaceous Argentinosaurus, known from fossils, fuels debates about the maximum sizes attained by sauropods.

Oceanography helps detail the Blue Whale’s physical attributes, aiding in accurate size comparisons with the prehistoric sauropods. The Jurassic Brachiosaurus provides insights into the incredible body structure of sauropods, much as modern studies of Blue Whales reveal their own physiological marvels.

Fossil studies by Paleontologists continue the quest to unravel the true dimensions of sauropods such as Diplodocus. The ecological roles of the Cretaceous Apatosaurus and the aquatic Blue Whale demonstrate the vast scale and diversity of vertebrate life across earth’s history.

Stick around and continue reading as I explore and discover some amazing facts about the land and sea giants. Let’s get started!

Is Argentinosaurus Bigger Than a Blue Whale? Argentinosaurus VS Blue Whale

One of the sauropod species that will come out in your search for giant sauropods is the Argentisaurus. Here are some details about this sauropod.

Size of Argentisaurus That Makes It Unique From Other Dinosaurs

Argentinosaurus is the world’s most giant dinosaur ever to roam the terrestrial part of the earth. Since its discovery in Argentina in 1987, paleontologists have debated its weight and height. 

Some concluded that these dinosaurs had a height of 75 to 85 feet from their head to toe and weighed 75 tons. Others reconstructed that Argentinosaurus has a total length of 100 feet which weighs 100 tons. 

Considering its height and weight, this dinosaur is categorized as a titanosaur, the diverse group of sauropod dinosaurs from the clade of Titanosauria that lived from the Late Jurassic Epoch until the end of the Cretaceous period. (Source)

Similar to the technical features of most Sauropods, titanosaurs were quadrupedal, long-tailed, long-necked, with small heads, and a plant-eating dinosaur or herbivorous dinosaur. 

Their difference from the sauropods involved anatomical differences; skulls, bones, rudimentary armor, and limbs produced a wider stance. Nearly all titanosaurs were widely held to possess lean & rigid bodies. 

The Special Case of Argentinosaurus Fossils

Even though there are no complete skeletons of Argentinosaurus found, paleontologists evaluated their size from the existing fossils that ranged from 37 to 40 meters or 121 to 131 feet and weighed 90 to 100 metric tons or 90 to 110 tons. 

From the fossil find, they were able to hypothesize the weight of the organism with a mass is much greater than 10 African elephants, where today, elephants hold the title of being the largest animal.

Today, if you want to see face-to-face how big and tall this dinosaur is, visit a field museum that modeled Argentinosaurus from the excavated fossils in Argentina where they named it “Maximo,” which reaches 122 feet, stands 28 feet tall, and weighs 70 tons.

Other Titanosaurus with Large Body Size

Aside from the Argentinosaurus, there were still other Titanosaurus that were larger in weight and height. One of them is Dreadnoughtus which had a total length of about 26 meters or 85 feet and 59 metric tons or 65 tons. This Titanosaurus also came from Argentina in its Southern part of Patagonia and had lived 77 million years ago.

Another known largest titanosaur is the Patagotitan mayorum, which “have been the largest terrestrial animal of all time” and has an estimated size of 70 metric tons or 77 tons and 37. 2 meters or 122 feet long. (Source)

Its size was calculated from the fossilized bones where the paleontologist collected a 2.4 meters or 8 feet femur from its end to end. From the Southwest of Cairo, Egypt, another large species of Titanosaurus was discovered called Paralititan stromeri that lived during the Cretaceous period. 

The excavation collected a 1.69 meter or 5.5-foot femur and fragments of shoulder blades, front leg bones, teeth, and vertebrae. With the recovered fossils, paleontologists estimated its size as 25 to 30.5 meters or 82 to 100 feet and have a mass of 60 to 75 metric tons or 66 to 83 tons.

The Duality of Land Animals Compared To Sea Creatures

The Land Animals vs. Sea Creatures duality starkly contrasts sauropods’ dominance of prehistoric terrains with blue whales’ mastery of contemporary oceans. These habitats starkly shaped their physical adaptations and size.

Sauropods, like Argentinosaurus and Diplodocus, evolved sturdy skeletal structures to navigate land and combat gravity, while blue whales developed streamlined bodies to move efficiently through water, using buoyancy to support their immense weight.

Where sauropods’ physiology enabled survival on rugged terrain, blue whales adapted to oceanic challenges with powerful circulatory systems and appendages suited for aquatic life. This duality highlights how habitats dictate evolutionary paths, underscoring environment’s role in creating the largest creatures of land and sea.

What is the Biggest Blue Whale in The World?

The blue whale is the largest known organism on the planet today. Though it differs in terms of habit from sauropods since it lives in the water, it is comparable to sauropods in terms of size. 

Diving Into Blue Whale Facts

The biggest animal to ever exist on this planet earth is the blue whale. This animal weighs about 150 tons and will reach more than 30 meters or 98 feet. Their tongue alone can weigh massively as much as an elephant and a heart that is the size of an automobile, specifically the Volkswagen Beetle. 

This species is a mammal that lives and rules the ocean. Blue whales have a carnivorous diet that eats tiny shrimplike animals called krill.

According to a study, there is a certain period of the year that these magnificent marine mammals eat up to 4 tons of krill a day. (Source)

Blue whales (Balaenoptera musculus)  are called baleen whales because of their “fringed plates of fingernail-like material,” known as baleen, attached to the upper jaws. Their way of consuming food is done by gulping or swallowing vast amounts of water, then the folded skin on their throat and belly will enlarge to ingest the mouthful of water. 

With the use of their gigantic tongue, water is forced to release out from the overlapping baleen plates leaving thousands of krill to feed on them. This magnificent aquatic animal is also called a sulfur-bottom whale because of the yellowish underbellies that resemble the color of that chemical element. (Source)

They are not just the largest animals to ever breathe on earth, for they are also the oldest and loudest animals (louder than a jet engine). 

The Biggest Blue Whale to Date

One of the blue whales known to date is the Antarctic blue whale (Balaenoptera musculus ssp. intermedia) that holds the largest animal on the planet. It has a massive weight of 400,000 pounds, estimated to be equivalent to 33 elephants, and will reach 98 feet in length. 

Based upon its name, the Antarctic blue whale is found in Antarctica, and sad to say, this enormous animal is already an endangered species. Some identified species of a blue whale are the Northern blue whale, Northern Indian Ocean blue whale, and the Chilean blue whale. All blue whales live in all the oceans except the Arctic and usually swim in pairs or alone. 

These magnificent mammals lived in the ocean, and if you are lucky to have an encounter with them, you can still hear them making sounds. However, blue whales are already endangered because they were hunted way back in the 19th century. Today, the largest animals are still drastically declining, which is why experts did something to protect these magnificent mammals so that they can exist thousands to millions of years later.

Some Comparisons of Blue Whale Compared To The Largest Sauropods

Let us now compare the blue whale with other giant sauropods. It will deal with information on how superior blue whales are in terms of mass. 

A General Comparison: Blue Whale vs. Other Animals

Blue whales live in an ocean environment, and larger sizes can be obtained compared to land animals. Because of the “global increase in the upwelling of nutrient-rich water,” they get from the ocean depths. 

One of the main reasons behind their gigantism is their feeding called “lunge feeding,” which allows blue whales to consume various prey such as small fishes and krills. 

It is why blue whales can engulf 10 kilograms of krill while ingesting approximately 70 000 liters of water. These massive aquatic mammals even surpassed the world’s most giant dinosaur, which is Patagotitan mayorum. 

Blue whales have a mass of 172, 365 kilograms or 190 tons, 34 meters long or 110 feet, while the biggest dinosaur weighed 62.6 metric tons or 2.2 tons that may have reached 36.5 meters or 120 feet. 

A Detailed Comparison: Blue Whales Vs. Large Dinosaur Species

If we compare Argentinosaurus to blue whales, it is inferior to the latter. The blue whale (Balaenoptera musculus) weighs over 130+ tons than the weight of the largest Titanosaurus. Yet, Argentinosaurus (Argentinosaurus huinculensis) is longer than a blue whale (89 feet), reaching 115 feet. 

Dreadnoughtus schrani, the newly discovered and studied dinosaur, gives the same result when compared to blue whales. The blue whale is still undefeated when it comes to weight.

Dreadnoughtus schrani weighed 60 tons, but in terms of height, they were almost similar; blue whales are 30 meters long, and Dreadnoughtus has a length of 26 meters. (Source)

Another largest dinosaur was the Brachiosaurus which reached 23 meters in length and 12 meters in height. Its size is as much as the length of two large school buses and a four-story building. 

Experts estimated that these dinosaurs had a mass of more than 28 tons. Hence they were considered gigantic dinosaurs. Yet, Brachiosaurus still can’t surpass the ocean giants- blue whales. Therefore, blue whales are the largest animals on earth, especially their mass. 

It is a different story, though, when it comes to their length, wherein the world’s most enormous dinosaurs may have reached the same size as a blue whale but in different habitats. 


Looking back, we humans are not the only creatures that dominated this planet. Some animals seem to be the ruler of the earth if they are still alive due to their sizes. It is incredible to know that we had giants before, like sauropods, and the largest animal on our planet that is still alive today, the blue whale. No matter what is bigger, both are indeed a big part of our planet and history.

Frequently Asked Questions

Is the Sauropod Dinosaur Larger than A Blue Whale?

The exact size of the biggest Sauropod dinosaurs is not definitively known. Some huge Sauropod dinosaurs such as the Amphicoelias fragillimus are estimated to have reached lengths greater than the largest blue whale on record. However, in terms of mass, most scientists say the blue whale is still the largest animal ever.

What Is the Largest Animal Ever?

The largest animal ever, in terms of mass, is considered to be the blue whale. The average size of a blue whale is about 80-100 feet in length, and it can weigh up to 200 tons. However, some fossil evidence suggests a huge Sauropod dinosaur known as the Amphicoelias fragillimus may have come close to, or even surpassed, this size.

What Is the Average Size of An Average Blue Whale and Is It Larger than A Blue Whale?

Blue whales average around 70-90 feet in length and can weigh up to 200 tons. This makes them the largest living creatures ever known. However, in terms of length, some fossil records suggest that certain Sauropod dinosaurs could have potentially been larger than a blue whale.

What Makes the Blue Whale Larger in Some Comparisons?

When comparing the size of a blue whale to a Sauropod dinosaur, scientists often use the measure of mass, which favors the blue whale as the world’s largest animal ever. Some sauropods may have been longer, but their body structure was not as dense or heavy.

How Large Was the Biggest Sauropod?

The largest sauropod was likely the Amphicoelias fragillimus. While only known from limited remains, it is estimated to have been about 58 metres (190 ft) in length and would have weighed about 122.4 tonnes (134.5 short tons).

Are There Any Other Animals that Come Close to The Size of A Blue Whale?

In terms of size and mass, the blue whale outstrips any other known animal ever. Other large aquatic animals like the sperm whale or massive dinosaurs are enormous, but none are as big as the blue whale.

Is the Tyrannosaurus Dinosaur Larger than A Blue Whale?

No, the Tyrannosaurus dinosaur was not larger than a blue whale. The largest T. rex specimens found have been up to around 40 feet long and weighed between 8.4 and 14 tonnes. This is much smaller than the average size of a blue whale.

How Big Were the Largest Sauropods and Whales?

The biggest representatives of their species, for sauropods and whales, could reach impressive sizes. Sauropods such as the Supersaurus could grow up to 33-34 meters (108-112 feet) in length, while the longest blue whale discovered was about 98 feet long.

Do We Have Any Collected Evidence of The Sauropod Size?

The exact size of sauropods is hard to determine due to the fragmentary nature of their remains. The largest sauropod ever found, Argentinosaurus, was estimated to be 98 feet long and weigh around 99 tons. However, some estimates based on incomplete fossils of other species suggest even larger sizes.

What Makes the Sauropods and Blue Whale the Biggest Animals of All Time?

The size of the Sauropods and the blue whale is due to their environment and the adequacy of food resources. Whales have the advantage of buoyancy in water, which allows them to grow to massive sizes without the constraint of gravity. Similarly, the dinosaur era was characterized by a warm climate and abundant vegetation, allowing for the evolution of such massive land creatures.