Leatherback sea turtles (Dermochelys coriacea) are fascinating creatures known for their unique anatomy and adaptations to marine life. Despite their formidable size and appearance, leatherbacks do not possess the traditional teeth found in most reptiles. Instead, they have evolved specialized structures in their mouths that serve specific functions. Here, we explore the myths and realities surrounding leatherback sea turtle “teeth.”

Myth: Leatherback Sea Turtles Have Sharp Teeth

One common misconception is that leatherback sea turtles have sharp teeth similar to those of other reptiles. This myth likely stems from the intimidating appearance of leatherback turtles, with their powerful jaws and beak-like mouths. However, in reality, leatherbacks lack true teeth in the conventional sense. Instead, their mouths are lined with pointed papillae, which are not used for chewing but serve other purposes.

Reality: Papillae Serve Multiple Functions

The pointed structures lining the mouths of leatherback sea turtle teeth are known as papillae. These papillae are made of keratin, the same material found in human fingernails and hair. While not true teeth, papillae play essential roles in the feeding and digestion of leatherback turtles. They help grip and swallow prey, such as jellyfish and other soft-bodied organisms, preventing them from escaping once captured. Additionally, papillae aid in expelling excess water from the turtle’s mouth after ingesting prey, facilitating efficient feeding.

Myth: Leatherback Sea Turtles Use Teeth to Attack Prey

Another misconception is that leatherback sea turtles use their teeth to attack and injure prey. This myth likely arises from the misconception that all reptiles are carnivorous predators with sharp teeth for hunting. However, leatherback turtles are primarily gelatinous zooplankton feeders, consuming a diet consisting mainly of jellyfish. Their feeding strategy involves engulfing prey whole rather than actively hunting or biting.

Reality: Filter-Feeding Adaptations

Leatherback sea turtles have evolved specialized adaptations for feeding on gelatinous prey. Their mouths are equipped with finely serrated edges and inward-pointing spines that help trap slippery prey like jellyfish. Additionally, the esophagus of leatherback turtles contains backward-pointing papillae, which further prevent prey from escaping once swallowed. These adaptations allow leatherbacks to efficiently feed on jellyfish and other soft-bodied organisms found in their oceanic habitats.


While leatherback sea turtles may appear intimidating due to their size and beak-like mouths, the reality is that they do not possess true teeth for biting or chewing prey. Instead, they have evolved specialized structures such as papillae to assist in capturing and consuming their preferred diet of gelatinous zooplankton. By dispelling myths surrounding leatherback sea turtle “teeth,” we gain a deeper understanding of these remarkable creatures and their unique adaptations to life in the ocean.

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