Are Sharks Teeth Hollow: Why, How, Detailed Facts Around It


Are Sharks Teeth Hollow: Why, How, Detailed Facts Around It

Perhaps the most discussed and infamous thing about sharks is their sharp teeth. And thanks to the media that we have created perceptions about this aquatic specie based on their teeth,

Sharks can have hollow teeth. In this case, experts agree that the majority of hollow teeth with missing roots are those that did not fully form in the course of the shark’s lifetime. 

It’s also claimed that teeth that didn’t fully establish their roots but still have an intact enamel covering can be retained even after the shark dies. As a result, hollow fossilized shark teeth can often be found.

Image Credit: A fossil shark tooth whorl by James St. John (CC BY 2.0) from Flickr

Do all sharks have hollow teeth?

The dental formation in sharks starts with the formation of enamel and then the roots and dentine. As a result, premature teeth are often hollow. But do all sharks have such hollow teeth?

Any shark that dies before having any fully formed teeth can have hollow teeth. Therefore, it cannot be measured in terms of shark species, as it depends entirely on the formation of teeth and a shark’s time of death. 

Teeth are replaced in a conveyor system arrangement in sharks. As a result, these fishes can regenerate and re-grow teeth indefinitely throughout their lives. As a result, it’s likely that they’re still growing teeth on their last day on Earth and that the fish will die before those teeth can form roots. As a result, we have hollow shark teeth.

Are shark teeth flat?

Sharks are, undoubtedly, one of the most infamous aquatic predators. But, although they are a fish species, their sharp teeth tell a different narrative.

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Not all sharks have flat teeth. The structure and size of shark teeth are determined by the nutrition and eating habits of the fish. As a result, sharks like the nurse shark have incredibly thick and flat teeth. They have such flat teeth because they must crush crabs or other shelled animals in a single bite before devouring them.

Sharks that must cut through the flesh of their prey, on the other hand, do not have flat teeth but rather sharp and triangular ones. In addition, many sharks have sharp lower teeth and triangular top teeth.

Are shark teeth weak?

The shark’s body is constructed of cartilage, and its teeth are not attached very deeply. So, do shark teeth become brittle as a result of this?

Shark teeth are weak due to a lack of good roots. As a result, they readily fall out. In fact, a shark’s teeth fall out and grow back in a continual cycle throughout its life.

However, it is a fallacy to have the perception that having weak teeth means you may easily break a shark’s teeth. No, you won’t be able to do it with your bare hands. Only in terms of their roots with the gum are the teeth vulnerable.

Are shark teeth cartilage?

As previously stated, sharks’ bodies are formed entirely of cartilage and lack bones. On the other hand, the density of cartilage varies by body part.

Shark teeth are cartilaginous as well. However, the existence of a tissue called dentin is what makes them so powerful. Because a shark’s body lacks bones, the teeth lack sufficient anchoring, which increases the chances of tooth falling out.

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That said, the presence of dentin allows shark teeth to be fossilized even when they are not formed with bones.

Are shark teeth strong enough?

When it comes to their teeth, sharks are one of a kind. The shapes and sizes of these fishs’ teeth vary depending on their food.

Shark teeth, however, are not strong enough and frequently fall off. However, the anatomy of their teeth is robust enough to break through or crush prey bones and flesh before digesting it.

Shark teeth, according to specialists, have a strong enamel coating that is quite similar to that of humans. As a result, their teeth are as hard as humans’.

Why are shark teeth so special?

Sharks have coexisted with other life forms on this planet for over 400 million years. And it is through the fossils of their teeth experts understand various details about them.

Shark teeth are one-of-a-kind because they can reveal information about the animal’s size and what it may have eaten. In fact, scientists have primarily learned about Megalodon through its petrified teeth to date.

There are also fossilized shark teeth for sale on several websites. Megalodon teeth are one of the most well-known among them. They are, nonetheless, the exact copies.

How to identify shark teeth?

Many online sites sell fossilized shark teeth these days. But isn’t it more vital to know how to spot a genuine shark tooth?

The following is a list of shark tooth species and the numerous markings used to identify them.

  • Tiger Shark:
    • Short
    • Blades with deep notches
    • 1.5″ to 2″ in length
    • 1″ in width
  • Bull Shark:
    • Tapered separation
    • Flat and broad 
    • Narrow tip
    • Up to 1″ long
  • Sand Tiger Shark:
    • Narrow with a long crown
    • No separations
    • High and curved teeth cusps
    • Usually, 1″ long
  • Great White Tiger Shark:
    • Triangular in shape
    • Broad and flat in width
    • 1.5″- 2.5″ long
  • Megalodon:
    • 3.5″- 7″ long
    • Much darker in color
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Apart from these specific characteristics, the ridges and gum line at the top of the tooth is the most common ways to identify a shark tooth. Furthermore, due to the hard covering of dentin, it will certainly be impossible to break through a shark’s teeth.


We are sure you have found this post insightful in comprehending shark teeth. Before we wrap up, it’s important to note that not all sharks have hollow teeth. A hollow fossilized tooth is only possible if it gets detached from the shark’s body before establishing appropriate roots. This list is inexhaustive, and you can always look for more information by conducting additional research.

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