Based on its whimsical name, it’s easy to assume that the cookiecutter shark is cute and gentle. However, nothing could be further from the truth. In fact, the name “cookiecutter” doesn’t refer to the shark’s demeanor. Instead, it’s a callback to the shape of the bite left behind on the creature’s prey.
This small but surprisingly fierce shark has a unique hunting strategy that sets it apart from many other species in the animal kingdom. In a recent film by National Geographic, researchers pull back the curtain on the illustrious shark and discuss their reputation as one of the mysterious creatures living in the Bermuda Triangle.
Discover more about what the cookiecutter shark looks like, where it lives, and how it uses its one-of-a-kind teeth to attack prey.
Cookiecutter Shark — Size and Appearance
Cookiecutter sharks are relatively small compared to other shark species.
©Jennifer Strotman / Public Domain – Original / License
Contrary to the popular opinion that all sharks are massive brutes, the cookiecutter shark is actually relatively small, with most growing to around 22 inches. Along with its small, slender body, the creature also has dark grayish-brown skin that helps it blend in with the dark parts of the ocean. However, it doesn’t use the ability to camouflage just for defense. It also allows the shark to sneak up on unsuspecting prey.
Where Do Cookiecutter Sharks Live?
While the video focused on the sharks living in the Bermuda Triangle, these creatures are highly versatile, inhabiting tropical and subtropical waters worldwide. Most tend to spend their time in depths between 200 and 2,000 feet, but can occasionally venture closer to the surface at night. Many researchers believe shallower regions offer more opportunities to hunt.
The cookiecutter shark habitat spans a variety of oceanic areas, including the eastern Pacific and western Atlantic. However, most sightings occur in the Gulf of Mexico or along the coasts of South America.
Understanding the Cookiecutter Shark’s Scientific Classification
The cookiecutter shark belongs to the family Dalatiidae, a group known for their distinctive feeding habits. Within this family, it is one of the few species of deepwater sharks. The genus name “Isistius” is derived from the Greek word for “cut,” referring to the shark’s method of carving out pieces of flesh from its prey.
Despite its small size, the cookiecutter shark’s specialized adaptations make it a notable species among sharks, as it is one of the few sharks that feeds by removing chunks of flesh rather than devouring whole animals.
What Makes Cookiecutter Sharks’ Teeth Unique?
Similar to other species of sharks, the cookiecutter possesses a mouth full of triangular teeth. However, what sets this animal apart from others is the design of its mouth. Instead of using serrated teeth to tear into prey, the shark’s teeth allow it to cut out circular plugs of flesh from animals much larger than itself.
The creature also has two separate sets of teeth. The first set is located in the upper jaw and features small, hook-like teeth that help secure the prey in place. The second set of teeth is much larger and creates the bite marks that give the shark its name.
Are Cookiecutter Sharks Bioluminescent?
One of the most shocking features of the cookiecutter shark is its bioluminescent capabilities. Like many other deep-sea creatures, they can produce light, which helps with navigating the dark depths of the ocean. However, navigation is only one benefit of their glow. The animal also uses bioluminescence to attract prey and potentially camouflage itself from predators.
Hunting Techniques of the Cookiecutter Shark
The cookiecutter shark deploys two different types of hunting techniques depending on the prey it’s after. For instance, when pursuing smaller fish and squid, the animal attacks in a similar manner to other shark species. However, when hunting larger prey, the shark uses a terrifying parasitic feeding method.
The technique involves using one set of teeth to firmly hold the prey, while the other set completes the cookiecutter-shaped bite. During the attack, the shark will rotate its body to complete the circular cut, leaving the prey with a large piece of flesh missing. Even though the attacks sound gruesome, the bites aren’t deadly unless multiple cookiecutter sharks attack an animal together.
What Animals Do Cookiecutter Sharks Hunt?
Cookiecutter sharks are opportunistic feeders, hunting a wide range of animals depending on their availability in the shark’s environment. Since these predators are small and agile, many animals don’t see them coming until they’re already latched on. While most feed on small fish and squid, they have also been known to sink their teeth into much larger prey, such as dolphins, whales, and other sharks.
The post Meet the Cookiecutter Shark, a Bizarre Predator With a Signature Circular Bite appeared first on A-Z Animals.
