11 Facts About Mako Sharks

iStock.com/Alessandro De Maddalena
iStock.com/Alessandro De Maddalena

Though dwarfed by the closely related great white shark, makos are impressive fish in their own right: They're speedy, powerful predators that have been featured in famous literature and have a bizarre connection to election forecasting. Read on to learn more.

1. There are two species of mako shark.

For over 150 years, marine biologists thought there was only one type of mako shark: the shortfin mako (Isurus oxyrhinchus), which got its scientific name in 1810. A second mako—the longfin mako (Isurus paucus)—wasn't recognized as its own separate species until 1966.

Identifying the second species took so long both because the makos look similar—both are open ocean predators with conical snouts and bluish-grey skin with white underbellies. They’re also found in many of the same areas (they prefer warm waters, and typically hang out in tropical or subtropical portions of the Atlantic, Pacific, and Indian Oceans). One way to figure out which is which is by comparing the flanks: The longfin mako is so named because, as the name implies, it’s got much longer pectoral fins. It's also a longer shark overall.

2. The longfin mako is the second-biggest Lamnidae shark.

The Lamnidae family includes the salmon shark, the porbeagle, and the great white. In terms of size, a full-grown great white, at 19.6 feet long, is the biggest. Next comes the longfin mako, which has a maximum known length of 14 feet. Even the biggest shortfins reach just 12.8 feet long.

3. Shortfin mako shark can reach speeds of at least 31 mph.

The shortfin mako is built for speed. Its body has a streamlined, bullet-like shape that minimizes water resistance, and its pectoral and dorsal fins are rather short, so they don’t create much drag—all features that combine to allow the sharks to slice through the ocean with ease. The scales behind the gills and along its sides are flexible; they can bristle upwards at an angle of over 60 degrees, and there’s some evidence to indicate that shortfin makos use these scales to manipulate the flow of water around their bodies, reducing drag still further. These adaptations help the shortfin mako reach speeds of at least 31 mph. Unverified estimates put the top speed of adult shortfin makos at 45 mph or more, and a juvenile shark was once estimated at 60 mph (though that measurement might not be 100 percent reliable).

Just how fast the longfin mako can swim is unclear. Fewer researchers have studied this fish in detail, but due to its longer fins, the shark is probably slower.

4. Mako is a word with Māori roots.

Shark tooth necklaces and earrings were traditional attire in the culture of the Māori of New Zealand. Mako is Māori word that can mean either “shark” or “shark tooth.” Longfin makos are not known to occur in New Zealand waters, but shortfins frequent the area, with the fish being especially common around the northern end of the country.

5. Male and female shortfin makos seem to avoid each other.

Beginning in December 2004, biologist Gonzalo Mucientes and his colleagues spent four months gathering data on sharks in the southeastern Pacific. Unexpectedly, they found adult shortfin makos practicing sexual segregation. On one side of an imaginary, north-south line between Rapa Nui (Easter Island) and the Pitcairn Islands, the team discovered male shortfins almost exclusively. The other side yielded many more females than males. Another study noticed this same kind of sexual divide among shortfin makos in the north Pacific. Scientists theorized that adult shortfin makos steer clear of the opposite sex for extended periods so the females who aren’t looking to reproduce can avoid harassment from males.

6. Shortfin mako growth and maturation rates are slow.

When they're born—after a gestation period that is believed to last 15 to 18 months—shortfin pups are 25 to 28 inches long. According to a 2009 study, males become full-fledged adults at between 7 and 9 years of age, but females don't hit that benchmark until they're between 18 and 21. The species has an estimated lifespan of 29 to 32 years—so when a given population of shortfin makos declines, the slow maturation rates can make it difficult for these fish to bounce back.

7. Some makos hunt swordfish.

You might say the shortfin mako enjoys fast food: The shark is a quick carnivore who chases down other high-velocity fish. Bluefish are a favorite meal: In an examination of 399 shortfin mako carcasses, bluefish remains turned up in 67 percent of their stomachs. The sharks will also go after squid, tuna, and billfish, plus the occasional dolphin or porpoise.

They're also known to attack swordfish and sailfish. Unfortunately for the sharks, those fish use their sharp beaks to impale attackers. Shortfin makos with stab or puncture wounds are a common sight; one female shark was found dead with a broken-off sailfish beak lodged in her eye. Reports of similar injuries on longfin makos tell us that this species also has an antagonistic (and probably predatory) relationship with powerful swordfish.

8. Shortfins sometimes jump into boats.

Big, fast, and tenacious, the shortfin mako is a prized game fish around the world—but grappling with one is quite the challenge for anglers. “The feel of most sharks on a fishing line is like hauling on wet laundry or trying to lift a cow,” wrote Jaws author Peter Benchley. “Fighting a mako has been compared to riding a bull or wrestling an enraged crocodile.”

It gets even tougher if the fish go airborne. Shortfin makos can reportedly leap up to 20 feet out of the water, often after getting caught on a fisherman’s line. That leads to a lot of weird-but-true headlines about makos who have propelled themselves onto boat decks. In 2013, a hooked shortfin weighing 303 pounds hopped aboard a private fishing vessel off the coast of New Jersey, causing $5000 in damages. Four years later, a 10-footer was released back into Long Island waters after it had burst from the ocean and gotten stuck under the guard rail of a chartered boat.

9. One species is prized for its meat.

The shortfin mako puts up a good fight, but that’s not the only reason why fishermen target them. “They’re unlucky enough to be one of the few shark species that is commercially viable for their meat,” wildlife ecologist Michael Byrne told Popular Science. Shortfin mako meat has a swordfish-like taste and has long been used as an ingredient in everything from stews to fish tacos. Longfin mako is sometimes eaten as well, but according to the University of Florida, longfin meat is considered to be lower in quality. However, the longfin is still actively hunted down for its namesake fins, which can fetch high prices as decorative items.

If a species can be fished, it can be overfished. The International Union for Conservation of Nature (IUCN) classifies both mako species as “vulnerable,” a designation it reserves for animals that might soon become endangered. Many of these sharks get accidentally captured when schools of tuna or swordfish are reeled in by large-scale fishing operations. Also, scientists think the shortfin’s slow maturation rates have contributed to its decline in many areas.

10. Ernest Hemingway wrote about them.

In The Old Man and the Sea—one of his final works, and the novel that won him a Pulitzer in 1953—Hemingway wrote a mako shark into a scene with the book's main character, Santiago, a Cuban fisherman who is trying to land an Atlantic blue marlin. He successfully harpoons one, but nearly loses his catch to a mako:

“The shark was not an accident. He had come up from deep down in the water as the dark cloud of blood had settled and dispersed in the mile deep sea. He had come up so fast and absolutely without caution that he broke the surface of the blue water and was in the sun … He was a very big Mako shark built to swim as fast as the fastest fish in the sea and everything about him was beautiful except his jaws.”

A fight ensues between man and beast. Santiago kills the shark, but not before it rips off 40 pounds of marlin meat, thus guaranteeing that other predators will flock to the corpse.

11. Florida researchers are using makos to predict election results.

Who needs polling data when you’ve got prognosticating sharks? Researchers at Nova Southeastern University in Fort Lauderdale, Florida, use satellite tags to survey wild sharks. In the fall of 2016, the scientists decided to advertise their program by using tracking data from two makos to try and predict the outcome of that year’s presidential election. Both fish were named after one of the candidates and it was decided that whichever shark had swum the farthest between September 26 and November 1 would be declared the winner. Within that timeframe, the Donald Trump shark swam 652.44 miles to the Hillary Clinton shark’s 510.07. The school used the same method to try to determine the outcomes of Florida’s 2018 Senate and gubernatorial races, crowning Ron DeSantis and Bill Nelson the winners. (DeSantis won; Nelson did not.)

New York City Falcon Cam Reveals Nest With Four Eggs

BrianEKushner, iStock via Getty Images
BrianEKushner, iStock via Getty Images

The urban jungle of New York City supports a vibrant wildlife population. One animal that calls the city home is the peregrine falcon, once an endangered species, that has been seen around downtown Manhattan for decades. Recently, a livestream of the falcons of 55 Water Street revealed that one of them is about to be a mom.

The camera on top of the skyscraper at 55 Water Street peers into a falcon nesting site, and a female peregrine falcon there has been displaying incubating behaviors since at least late March, according to the Downtown Alliance's blog. It was assumed she had laid eggs, though this wasn't confirmed until she flew away from her nest on the afternoon of March 31. Her absence left four eggs in clear view of the building's bird camera.

It also created some concern among viewers. When female falcons leave the nest to hunt, the father usually takes over incubating duties—something that didn't happen in this case. Fortunately, the mother wasn't gone long enough to put her eggs in any real danger. She returned later that afternoon, and is currently nesting right where the internet can see her.

Peregrine falcon eggs need to be incubated for about 33 days, so expect to see them hatch sometime within the next month. In the meantime, here are some more animal livestreams to check out.

Busch Is Donating Three Months’ Worth of Beer to People Who Adopt or Foster Shelter Dogs During the Coronavirus Pandemic

This dog can turn a foster home into a forever home with one slobbery smile.
This dog can turn a foster home into a forever home with one slobbery smile.
Nataba/iStock via Getty Images

If getting to play with a happy, lovable pup isn’t already enough of an incentive to foster or adopt a shelter dog, Busch is throwing in a bonus—three months’ worth of free beer.

CNN reports that the “Foster a Dog, Get Busch” deal is available to the first 500 people who foster or adopt from Midwest Animal Rescue & Services (MARS) in Brooklyn Park, Minnesota. Fostering is free, and adoption costs between $200 and $600 (which covers all required vetting services, including deworming, vaccines, spaying or neutering, and more).

The offer is meant to encourage folks to help animals in need at a time when many shelters are canceling adoption events or temporarily shutting down to prevent the spread of the new coronavirus. According to People, Busch is donating an additional $25,000 to MARS to keep the animals safe and cared for.

“During these uncertain and lonelier times, people need an escape: cue the cute puppy memes and photos,” a Busch spokesperson told People. “But as much as we need those cute puppy pics to help get us through social distancing, it’s actually them who need us.”

If you’re interested in hanging out with a MARS rescue and a refreshing bottle of Busch, you can apply to foster a dog here. Once you’ve finished the process and received a confirmation email from the shelter, you should send a screenshot of that email to Busch through Facebook, Twitter, or Instagram before April 25. (Since only the first 500 people will be able to claim your prize, we recommend passing along that confirmation email as soon as you get it.) Busch will respond to winners via social media and send them each a prepaid debit card for $100.

You can take Busch’s advice and use it to buy a hefty supply of alcohol, or you can spend it on something else that’ll help pass the time during self-isolation—like a pop culture subscription box, or products for an indoor garden.

[h/t CNN]

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