I’ve been entranced by sharks since I was a little kid. From the first time I saw Jaws, I was hooked (pun intended). There are so many aspects of a shark’s physiology I admire, but my favorite point of fascination is probably the variety of hunting techniques they use to capture their prey. Though most of my friends are aware of my sharktastic obsession, others are surprised because I’m, well, a vegetarian. Yes, I’m a vegetarian with an intense interest and, dare I say, admiration for this aquatic carnivore’s feeding habits. This animal’s intelligence, grace, stealth, and prowess are unparalleled on land (except maybe when J.J. Watt is playing for the Texans). When people hear the word “shark,” they typically picture mindless killing machines, but they couldn’t be further from the truth. Sharks have highly adapted hunting strategies that have been honed over millions of years to make them one of the most efficient predators on the planet. Here is my own personal countdown of the most fascinating shark hunting methodologies.
5. Mako shark (Isurus oxyrinchus): Mako sharks are one of only a few shark species that are technically endothermic meaning they are able to maintain a fairly high internal body temperature roughly seven to 10 degrees above that of the water around them. This high body temperature gives them the energy they need to maintain a constant swimming speed of up to 35 miles per hour and bursts of speed of up to 70 miles per hour. The symmetry of their caudal fin also helps them maintain these high speeds. Due to this unique adaptation, Mako sharks are the fastest shark species out there making them a lethal predator. Though they’ll eat a number of different oceanic species including cephalopods, dolphins, and sea turtles, they can also chase down some of the fastest schooling fish in the sea like tuna and swordfish.
4. Whale shark (Rinchodon typus): Whale sharks get bragging rights as the largest fish species in the world. And while they can grow more than 40 feet in length, their food of choice is plankton. That’s right, ladies and gentlemen, the largest fish species in the world feeds on tiny plankton. As a filter feeder, they swim through the ocean with their mouths wide open to filter out these delicious little morsels and any other small fish that make the mistake of getting in the way. Getting out of the way isn’t always the easiest feat though, since a whale shark’s mouth can open to almost five feet wide!
3. Bull shark (Carcharhinus leucas): The bull shark is definitely a contender when it comes to most fascinating hunting techniques. One of the main reasons for this is its increased territory and hunting ground; it’s one of the few shark species known to habitually hunt in freshwater. When it comes to hunting, bull sharks get their name from their use of a technique known as the bump and bite. Bull sharks will use their body weight to propel themselves into their prey to stun or even kill it. Then, before the prey has a chance to recover, the bull shark attacks. Their unique ability to adapt to freshwater environments means they also have a wide range of prey from sloths to cows to hippos! They are extremely territorial, so they are one of the most common offenders when it comes to shark attacks on humans. Rule of thumb: if you’re in a murky body of water and you feel a hard bump, maybe get out of the water for a bit.
2. Great white shark (Carcharodon carcharias): Of course, I had to include the famous great white shark. Great whites are probably the most well-known shark, because they have the best agent. Or maybe it’s because almost any movie about a killer shark stars the great white. While many of these Hollywood depictions have led the general public to believe these animals kill without discrimination, they are actually exceptionally precise and calculating hunters. Great white sharks utilize two hunting practices that, when put together, make them an aquatic force to be reckoned with. The first, known as spyhopping, is predominantly seen in marine mammals like dolphins and whales.
Spyhopping is when an animal brings its head above the water’s surface to take a look at their prey. The great white shark is one of the only shark species that we know of that to utilize this technique. After their recon mission, great white sharks travel below the surface to wait for the opportune moment to seize their prey. To capture fast-moving marine mammals (their favorite blubbery snack), great white sharks travel at incredible speeds and explode through the surface of the water. This practice is called breaching, and it’s most impressive when you consider the size of these predators. Great white sharks can weigh up to 2,000 pounds and burst out of the water at speeds up to 40 miles per hour. Some can even reach heights of 10 feet above the water’s surface! It’s a fairly rare occurrence, because it takes considerable energy to propel these animalistic torpedoes out of the water.
1. Thresher shark (Alopias vulpinus): By far, my favorite hunting technique of any animal. For decades, fishermen claimed that these sharks used their caudal fin to hunt. They would consistently find thresher sharks caught in their hooks; however, the sharks weren’t hooked by the mouth, they were hooked by their tail fin. Their conclusion was that the unusual shape of this shark’s tail fin was a prominent and integral part of its hunting technique, though they weren’t sure how. Thresher sharks are easy to identify, since they have a highly elongated upper lobe on their caudal fin. This caudal fin can sometimes make up two thirds of the shark’s body length. It has only been throughout the last few decades that researchers have come to witness their amazing hunting technique in the wild. Thresher sharks can actually use their caudal fin like a whip to stun their prey before going in for the kill. It’s a truly remarkable hunting strategy that you have to see to believe!
Don’t forget to stop by the museum’s Shark! exhibition this summer to get a chance to learn even more about these amazing animals. You can track sharks, learn about how researchers tag and study great whites, and touch live epaulette carpet sharks and white-spotted bamboo sharks at our touch tanks, open through Sept. 7.
Still not enough saltwater for you? Drop by the brand-new Hamman Hall of Texas Coastal Ecology, opening this Friday, May 22.