Meet the Most Massive Great White Sharks to Swim the Gulf of Mexico

The waters of the Gulf of Mexico are often favored for their warm temperature, attracting tourists throughout the summer season. But these waters attract more than just people; they also draw the world’s most feared sharks. Great whites of all sizes swim through these waters, and some individuals grow to astonishing sizes. For decades, sightings of great whites in the Gulf were few and far between, with some researchers even disputing they existed there, stating that temperatures in this region were too warm or appropriate prey was too scarce. However, scientific evidence now reveals a different picture. Tracking data from marine conservation organizations shows that great whites definitely migrate into the Gulf.

Though the average great white is large, some of the biggest specimens grow to even more impressive dimensions. Females can grow to 15–16 feet, with the largest recorded individuals measured at 20 feet. On top of incredible proportions, these fish display immense power, capable of hunting and destroying prey with ease. Because their presence in the Gulf is ecologically important, tagging, tracking, and research efforts have intensified over the years. As our understanding of these colossal marine animals grows, so too does out fascination with them. Check out the most massive great whites that call the Gulf of Mexico home.

8. Caroline—1,435 lbs

Let’s start off our list with a bang! Caroline is a great white shark that has been spotted as far north as the Cabot Strait, off the southern coast of Newfoundland in Canada. This amazing creature traveled all the way down to the southwest part of the Gulf of Mexico, where researchers found her near Veracruz, Mexico. Caroline measures 12 feet and 9 inches long. She was at sub-adult status when she weighed in at 1,435 pounds. That means she still has some growing to do. How massive will this intrepid explorer get?

7. Acadia—1,601 lbs

In 2021, Acadia the 12-foot 7-inch great white made quite a stir in southern Texas, when scientists spotted her 150 miles off the Galveston coast. Researchers suspect that she may have been taking advantage of an abundance of prey species brought into the middle of the Gulf of Mexico by sea mouth upwelling. Acadia weighs in at 1,601 pounds. Researchers found this hefty gal during a Nova Scotia expedition, and they gave her a French Canadian name to honor the region.

6. Ferg—1,621 lbs

Ferg the 1,621-pound beast seems to spend most of his time in the cool waters of the Atlantic. Researchers have spotted him many times off the Carolina coasts. However, on February 1st, 2021, researchers found him hanging out in the Florida Keys. Ferg is a fully mature, adult male and he measures 11 feet and 8 inches long.

5. Scot—1,644 lbs

Big boy Scot is a 12-foot 4-inch shark that has been pinged many times off the Floridian coast in the Gulf of Mexico. Like many of the other sharks on this list, Scot is tracked by OCEARCH, an organization that conducts global research on sharks and other ocean animals. OCEARCH scientists capture and tag sharks and then release them back into the ocean so they can be tracked.

Scot (cont.)

When Scot’s dorsal fin breaches the water’s surface, it sends a ping that allows researchers to know exactly where he is. At 1,644 pounds, Scot is one of the largest sharks that OCEARCH tracks.

4. Miss Costa—1,668 lbs

The glamorous Miss Costa is one of the more famous sharks on our list. More than 16,000 people follow her X social media account. At 1,688 pounds, Miss Costa certainly is a wonder. She measures 12 feet and 5 inches long and is often pinged in the deep waters near Florida’s Gulf coast.

3. Katharine—1,804 lbs

At a whopping 1,804 pounds, Katharine is a magnificent great white specimen. She has been spotted many times in the West Florida Escarpment, particularly near Apalachicola. Katharine measures 14 feet and 2 inches long—that’s longer than a midsize sedan! She was named after Katharine Lee Bates, who wrote the song ‘America the Beautiful’.

2. Unama’ki—2,195 lbs

At 2,195 pounds, it’s amazing that Unama’ki is only at number two on our list of the largest great white sharks ever found in the Gulf of Mexico! She measures 15 feet and 5 inches in length. That is one gargantuan fish! Unama’ki, which means ‘Land of the Fog,’ is the Mi’kmaq name for Cape Breton, where this massive shark was first tagged. She was last pinged in 2020, in the Gulf of Mexico, near the Florida keys.

1. El Monstruo de Cojimar—7,000 lbs

Drumroll, please! The largest great white shark ever found in the Gulf of Mexico was the legendary 7,000-pound Monstruo de Cojimar. In 1945, six Cuban fishermen decided to hunt the mysterious underwater monster that had been eating up much of the fish population in their area. They took off in a boat, armed with harpoons and rope, and they came back with an incredible 21-foot-long ‘monster shark’ to display to the townsfolk.

El Monstruo de Cojimar (cont.)

The tale of El Monstruo may have inspired Ernest Hemingway’s classic novella The Old Man and the Sea, which tells the story of a struggle between an elderly Cuban fisherman and an enormous fish.

What is the Largest Shark Ever Recorded?

The largest shark ever recorded was a whale shark caught in Taiwan. It measured nearly 62 feet or 18.8 meters long and weighed 34 tons or 74,957 pounds. This was one big fish! If you need help visualizing such a huge creature, think of a transfer truck—the largest whale shark was even bigger!

What is the Largest Shark Ever Recorded? (cont.)

Whale sharks, which can live up to 130 years, dwell in all tropical oceans. Like their large cousins, the megamouth and the basking sharks, they have large mouths that filter feed on plankton and other small fish.

How Do the Largest Sharks Compare in Size?

To get a better idea of just how big the biggest sharks are and how they compare to each other – check out the illustration above. The whale shark at the top is as big as a transfer truck – while the basking shark on the second row is about three-quarters as big. The great white shown within the truck isn’t half as big as the whale shark or the truck. The human is tiny in comparison. It’s a good thing the whale shark and basking shark are filter feeders – the great white gives us enough to worry about!

What is the Largest Shark Ever to Live?

While we can take comfort in the fact that massive whale sharks are filter-feeders and won’t harm us – creatures that roamed the oceans 20 million years ago faced a terrifying threat. The megalodon was a monstrous shark that grew to lengths of 18 meters (60 feet) and weighed up to 120,000 pounds (60 tons). There was another horrible difference between megalodon and their whale shark cousins – their huge teeth.

What is the Largest Shark Ever to Live? (cont.)

Megalodon teeth reached 18 centimeters long with serrations that indicated that this big fish was a meat eater. The megalodon’s huge jaws were equipped with 276 of these daggers and one of the most powerful bite forces ever – measuring around 40,000 pounds per square inch (psi). A great white’s bite force measures at 4,000 psi – one of the most powerful on earth today.