Unusual Incident: Turtle Biting Tourists in Croatia's Čiovo Island

Unusual Incident: Turtle Biting Tourists in Croatia's Čiovo Island

Discover the unexpected encounters between tourists and loggerhead sea turtles on Croatia's Čiovo Island. Learn about these rare incidents, their conservation significance, and the delicate balance between human activity and wildlife protection.

The picturesque shores of Slatina beach on the Croatian Dalmatian island of Čiovo have become the backdrop to an unexpected natural phenomenon. The loggerhead sea turtle, a protected species, has made its presence known with a series of unusual incidents involving beachgoers. This article delves into the encounters between these ancient marine creatures and visitors, shedding light on the behavior of these turtles and the importance of their conservation.

A Protected Marvel of the Adriatic: The loggerhead sea turtle, scientifically known as Caretta caretta, is a remarkable inhabitant of the Adriatic Sea. Its distinguishing feature is its large head equipped with a powerful jaw, from which it derives its name. This species can reach lengths of over one meter and weigh up to 115 kilograms. These turtles boast an impressive lifespan, averaging around 60 years, and are among the two sea turtle species that breed in the Mediterranean.

Unforeseen Conflicts

In recent times, the tranquil coexistence between these marine creatures and humans has taken an unexpected turn. Reports have surfaced of loggerhead sea turtles exhibiting aggressive behavior towards beachgoers. Local news agency Hina reported that the turtles have bitten multiple bathers, leading to concerns among residents and authorities. Alen Soldo, a marine studies professor at the University of Split, highlighted the challenge in addressing the situation. As these turtles are a strictly protected species, their presence near the coastline poses a conundrum for intervention.

Understanding the Motivation

Sea turtles often venture close to the shore while foraging for food, bringing them into proximity with swimmers. Feeling threatened by the human presence, these usually docile creatures may react defensively, leading to unintended confrontations. It's crucial to note that swimmers are often unaware of the turtles' presence, and the turtles themselves are simply defending their territory. Experts anticipate that the loggerhead sea turtles will continue their presence in the Slatina area until the sea temperature drops, at which point they will retreat to deeper waters.

Turtle bite and a scratch on a back of a tourist. Photo source: Dnevnik Nove TV, Croatia

Turtle bite and a scratch on a back of a tourist. Photo source: Dnevnik Nove TV, Croatia

Conservation Significance

The loggerhead sea turtles play a vital role in the ecological balance of the Adriatic Sea. As the only reptiles in this marine ecosystem, they contribute to maintaining biodiversity and healthy aquatic environments. The females, in particular, exhibit a unique nesting behavior, coming ashore exclusively for egg-laying purposes. This makes their conservation even more critical, as their nesting sites face various threats.

Beach near Split, Croatia, clear water. sunny weather, tourist on beach

Beach near Split, Croatia

Top 10 facts about loggergead sea turtles

  1. Powerful Jaws and Bite: Loggerhead sea turtles possess strong jaws and a powerful bite. While they don't have teeth, their sharp, curved beaks are designed for crushing and gripping. This adaptation helps them feed on a variety of prey.
  2. Diverse Diet: These turtles are opportunistic feeders, and their diet varies depending on their life stage. Juveniles primarily eat small marine animals like crabs, jellyfish, and other invertebrates. As they grow, their diet expands to include sea urchins, squids, and even small fish.
  3. Nomadic Navigators: Loggerheads are known for their impressive navigational abilities. They are capable of traveling long distances across oceans and finding their way back to their natal beaches when it's time to nest. This nomadic behavior contributes to their widespread distribution.
  4. Distinctive Appearance: Loggerhead sea turtles have a distinctive reddish-brown shell with a slightly heart-shaped outline. Their shells can measure up to 110 centimeters (about 43 inches) in length and weigh around 115 kilograms (approximately 253 pounds).
  5. Long Lifespan: These turtles are long-lived creatures, with an average lifespan of around 60 years. Some individuals have been known to live even longer under favorable conditions.
  6. Nesting Rituals: Female loggerheads return to the same beaches where they were born to lay their eggs. They emerge from the water at night to dig nests in the sand and lay their eggs, covering them up before returning to the sea. This nesting behavior is critical for the survival of the species.
  7. Temperature-Dependent Sex: The temperature of the sand where the eggs are incubated determines the sex of the hatchlings. Warmer sand tends to produce more females, while cooler sand produces more males. This phenomenon has implications for the population dynamics of loggerhead sea turtles in a changing climate.
  8. Protected Species: Loggerhead sea turtles are classified as vulnerable by the International Union for Conservation of Nature (IUCN). They face threats such as habitat loss, accidental capture in fishing gear, pollution, and climate change. Conservation efforts are essential to ensure their survival.
  9. Marine Ecosystem Engineers: As both predators and scavengers, loggerheads play a role in maintaining healthy marine ecosystems by controlling the populations of their prey species. Their interactions with their environment have far-reaching impacts on the ocean food web.
  10. Cultural Significance: Loggerhead sea turtles hold cultural significance in many coastal communities. They are symbols of longevity, wisdom, and resilience in various cultures around the world.
Turtle with its prey in mouth underwater

Turtle with its prey in mouth


The unexpected interactions between loggerhead sea turtles and beachgoers on the Čiovo island serve as a reminder of the intricate connections between humans and nature. While the incidents may raise concerns, they also emphasize the importance of respecting and safeguarding protected species. The harmony of these coastal ecosystems relies on our understanding and appreciation of the roles each creature plays. As the sea temperature eventually drops and the loggerhead sea turtles return to the depths, the island's inhabitants and visitors are left with a unique tale of cohabitation and conservation.