Discovering the Largest Great White Shark on Record: The Story of Deep Blue

Deep Blue is the biggest great white shark ever recorded, measuring in at 20 ft long and estimated to be 4,500 pounds. She was first spotted during the 2014 episode of Shark Week’s “Jaws Strikes Back”. Other large great whites have been measured and recorded as well.

The Canadian Shark Research Center has reported that the world’s largest accurately measured great white was 20 feet (6.1 meters) in length. Additionally, J.E. Randall reported that a reliably measured great white was 19.7 feet (6 meters) in length from Ledge Point, Western Australia in 1987.

It is estimated that Deep Blue weighs over 2 tons and is believed to be 50 years old or more! It is also believed that she may have given birth to many pups over her lifetime, making her an important part of the ocean’s ecosystem.

To summarize, some of the biggest great whites ever recorded include Deep Blue, measuring 20 ft long and estimated to be 4,500 pounds; a reliably measured great white from Ledge Point, Western Australia in 1987 measuring 19.7 ft; and a world’s largest accurately measured great white from the Canadian Shark Research Center measuring 20 ft (6.1 meters).

Have you ever wondered about the biggest great white sharks ever recorded? Well then, you’re in luck! In this article, I will be discussing the biggest great white sharks ever recorded and their impact on our understanding of these incredible creatures.

We’ll start with a description of the largest great white shark ever encountered – Deep Blue.

Definition of a Great White Shark

A great white shark, also known as Carcharodon carcharias, is a species of large mackerel shark which can be found in coastal waters in all major oceans. Great whites are apex predators, as well as the largest predatory fish on Earth. They have been recorded at lengths of up to 20 ft and estimated to weigh up to 4,500 pounds.

Additionally, great white sharks are not social animals and will generally remain solitary unless hunting for food. They feed mainly on small mammals such as pinnipeds, sea lions and dolphins.

Great whites have become the subject of many films and documentaries due to their widely varied behaviors and fierce attack capabilities. However, despite popular misconception great whites may appear threatening but rarely attack humans.

History and Significance of Great White Sharks

Great white sharks (Carcharodon carcharias) have a very long history of fascination and fear among humans. They were first feared by sailors as far back as ancient Greek and Roman times, with sightings being recorded in many of those civilizations’ primary written works. More recently, in fiction they are famous for being bloodthirsty killers – a role they both inhabit and transcend in reality.

These magnificent apex predators guard our oceans’ delicate balance of life, yet humans’ fascination with them has made them US protected species since 1997; this means that fishing for great white sharks is illegal in United States waters and no activities that harm or kill them are allowed. Despite this protection from human exploitation, great whites remain under threat from pollution, competition with fisheries for food sources, and any number of other threats facing our planet’s oceans.

Yet despite their crucial role in the oceanic ecological balance, we still lack an overall understanding of the size range for these creatures – until recently the largest specimen known was just 16 feet long! This all changed when scientists tracked down a majestic specimen estimated to be 20 feet long named Deep Blue – thought to be the largest great white shark ever recorded. Deep Blue first rose to prominence during an episode of Shark Week’s “Jaws Strikes Back” in 2014; although unseen directly due to her incredible elusiveness she immediately became an icon in both science and popular culture alike!

Largest Great White Sharks on Record

Sharks have been an integral part of our lives for centuries, but some stories have risen above others in terms of size, magnificence, and sheer terror. One of the biggest great white sharks ever recorded is the infamous Deep Blue, which was first spotted back in 2014 during the episode of Shark Week titled “Jaws Strikes Back“. According to estimates, this giant of the deep measured in at 20 ft long and is estimated to weigh 4,500 pounds. But is she the biggest great white ever recorded? Let’s dive into this topic and find out.

Deep Blue (2014)

Deep Blue is the largest great white shark ever recorded – measuring in at a whopping 20 feet long and estimated to weigh an incredible 4,500 pounds. She was first spotted during a 2014 episode of Shark Week called “Jaws Strikes Back,” where researchers and biologists from the Marine Conservation Science Institute (MCSI) were sent to Guadalupe Island, off the west coast of Mexico, to observe her majestic size. Although originally estimated to be 50 years old, more recent research suggests that Deep Blue is actually closer to 70 years old.

While the records on oldest-living great whites are still inconclusive, Deep Blue may currently hold that title too – having already been around for decades before her recognition. Her immense size and long life span have allowed her to become an ambassador for shark conservation efforts around the globe – inspiring countless people and raising valuable funds for research into these incredibly misunderstood creatures.

Colossus (2015)

Measuring in at an incredible length of approximately 18.5 ft, the Colossus Great White Shark was spotted in 2015 and is believed to be among the five largest great white sharks ever recorded. The shark first made its massive appearance off the coast of Hawaii. Reportedly, this powerful swimmer moved with grace and ease like a true apex predator should.

The Colossus Great White Shark has not been seen since first spotted in 2015, though researchers have tried to attach a tracking device so that it can be monitored in the future. It has been speculated that this shark may travel up and down the coast of California rather than remain near Hawaii all year long, as larger females are more likely to travel more before settling into a particular area for some time.

Submarine (2015)

Submarine, another great white shark recorded in 2015, appears to be the second largest ever caught on film. She was spotted off Guadalupe Island and estimated to weigh an impressive 3,541 pounds and measure 17-18 ft in length. Along with a handful of other cameras placed underneath the water’s surface by Discovery Channel, it allowed multiple viewers to watch Submarine’s majestic movements through shark week.

Factors That Impact the Size of Great White Sharks

One of the biggest mysteries in the animal kingdom is why some great white sharks grow to extraordinary sizes while others remain much smaller. This article will explore the underlying factors that influence the size of a great white shark. We’ll look at diet, genetics, environment and other factors that can effect the size of these majestic creatures.

Whether you’re a shark enthusiast or just have a passing interest, this article will help you gain a better understanding of the factors that can influence a great white shark’s size:

  • Diet
  • Genetics
  • Environment
  • Other factors


Age is a critical factor impacting great white sharks’ size. The larger the shark, the older it tends to be. Generally, great white sharks reach their full size at 10 to 16 years old, while some can even live until they are 30 or more. Furthermore, scientific research shows that female great whites tend to be longer than males after reaching maturity.

Age and growth rates are difficult to determine for great whites since their life span and growth rate are highly dependent on environmental conditions like available prey and water temperatures. Examination of growth layer groups in the vertebrae of white sharks reveals that these animals grow most rapidly during the first several years of life and grow slowly after maturity is attained, reaching their maximum size later in life.

While most great whites rarely exceed 17ft in length and rarely weigh over 2 tons, there have been extreme outliers like Deep Blue– a 20 ft long female estimated at 4500 lbs that was first spotted during Shark Week’s “Jaws Strikes Back” documentary in 2014. Such exceptions are likely due to extremely advanced age but further research is needed for confirmation.


Diet is one of the key factors that influence the size of great white sharks. Great white sharks are carnivorous animals, feeding primarily on fish, marine mammals, and sea turtles. By feeding on these animals, great whites acquire important nutrients that allow them to grow larger than most other shark species.

In addition to having an abundant food supply, an increase in the size of prey items may also contribute to greater body lengths for sharks. Greater body lengths in turn result in larger individuals since there is more muscle mass to develop.


Generally, female great white sharks tend to grow larger than male great white sharks. Females typically reach lengths of up to 20 feet, while males tend to remain just short of 16 or 17 feet in total length. This gender size disparity is primarily determined by the fact that female great whites must invest much more energy into providing nourishment for their eventual offspring. This is why nature tends to favor larger sizes for many animal species: a greater body size comes with additional reproductive benefits.

In addition to gender, the age of a great white shark can also impact its size. Generally speaking, juvenile great whites are only about seven or eight feet in length, and will slowly increase in size as they get older and acquire more calories through feeding on prey. It should be noted that most adult specimens still have a huge amount of growing yet to do; they eventually become capable of reaching greater lengths than what was previously recorded in any study or encounter!


Through research, the biggest great white shark ever recorded is Deep Blue, measuring in at 20 ft long and estimated to be 4,500 pounds. It was first spotted during the 2014 episode of Shark Week’s “Jaws Strikes Back“. This discovery has opened up more possibilities of finding more great white sharks and studying their behaviors more in depth.

This article has explored some of the biggest great white sharks ever recorded and their potential impact on the conservation of these creatures.

Summary of the Largest Great White Sharks

Deep Blue is the largest great white shark ever recorded, measuring in at 20ft long and estimated to be 4,500 pounds. She was first spotted during the 2014 episode of Shark Week’s “Jaws Strikes Back”. Aside from Deep Blue, two other notable female large white sharks were both documented in the Mediterranean Sea; a 16ft female off Malta in 2013, and a 17 ft female off Sardinia in 2011. There have also been several sightings of large white sharks in other regions such as California, Africa and Australia.

These encounters demonstrate that the great white shark is not only one of the top predators of our oceans but is also capable of remarkable growth potential. In order to determine the absolute size limits of this species more research needs to be done. Despite our current knowledge (or lack thereof), there’s no doubt that deep blue has set a new baseline for an impressive animal.

Impact of Great White Sharks on the Ecosystem

Great white sharks, as apex predators, play an important role in maintaining balance within the ocean’s ecosystem. By keeping their prey populations at healthy and stable levels, they help maintain the stability of marine habitats. Additionally, great whites often scavenge when they don’t want to hunt themselves, helping to reduce decaying matter such as dead whales.

In areas where great white sharks are found, it has been noted that species lower on the food chain will grow larger than average due to a lack of predators controlling their populations. Conversely, when a shark population is heavily depleted in an area previously inhabited by great whites, some species have experienced rapid and significant population increases due to a lack of predation control from shark’s natural role in the aquatic environment hierarchy.

Great whites are also highly migratory species that face various threats across their expansive range (including fishing pressure and habitat disturbances). As such, understanding how these apex predators interact with ocean ecosystems is essential for conserving them as well as the biodiversity of our oceans today.

Do 30 foot great white sharks exist?

Yes, 30 foot great white sharks do exist. Great white sharks are the largest predatory fish on Earth and can grow to an average of 15 feet in length. However, there have been reports of great whites reaching lengths of up to 20 feet or more. The longest scientifically measured great white shark was recorded at just over 20 feet long.

The size of a great white shark is determined by its age and environment. Sharks that live in colder waters tend to be larger than those living in warmer waters. Additionally, older sharks tend to be larger than younger ones. It’s important to note that while 30-foot great white sharks have not been confirmed, they are still possible due to the potential size of these animals.

Great whites can live for over 70 years and reach sizes much larger than what has been recorded so far. Overall, it is likely that 30-foot great white sharks exist but has yet to be discovered or documented by scientists. Key Points:

  • Great white sharks can grow to an average of 15 feet in length
  • The longest scientifically measured great white shark was recorded at just over 20 feet long
  • Size is determined by age and environment
  • 30-foot great whites may exist but have yet to be documented



Samantha is a California-based blogger with a passion for the arts, STEM, and education. With a Bachelor's degree in Fine Arts and Computer Science, she explores the intersection of these fields in her engaging and informative blog. Whether attending gallery openings or experimenting with new creative techniques, Samantha is always looking to push the boundaries of what's possible. In her free time, she enjoys hiking, reading, and spending time with loved ones.

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