Sharks' Secrets Revealed: Satellites Show Their True Behavior

In recent years, modern technology has fundamentally changed the way scientists study sharks. From once mysterious and difficult-to-track predators, sharks have become, thanks to satellites, some of the most closely monitored marine animals. Researchers can now track their movements almost in real-time and obtain valuable data on their migration, behavior, and the environments they inhabit.

The basis of this research lies in special satellite devices, known as tags, which are attached to the shark's dorsal fin. These sensors record location, time, and often other data, such as diving depth or water temperature. As soon as the fin emerges above the surface, the device transmits data to a satellite, from where it reaches scientists' databases and subsequently clear maps. This allows researchers to track how sharks cover thousands of kilometers across oceans and how their routes change over time.

International projects, such as the OCEARCH initiative, which collaborates with scientists worldwide, play a significant role in this research. This project creates an extensive database of shark movements, and a portion of the data is made publicly available. This allows people to track specific individuals online and better understand their lives and their importance to the oceanic ecosystem.

However, research is not only conducted in remote parts of the oceans. Shark monitoring is also carried out in Europe, for example, in the Adriatic Sea, where scientists track their presence and movement near the coast. This information helps not only to better understand their behavior but also to increase the safety of people in these areas.

The collected data also indicate that climate change has a significant impact on sharks. Warming oceans and changes in food availability affect their migration routes and may cause some species to appear more frequently in coastal areas. These changes are one of the reasons why there have been more encounters between humans and sharks in recent years.

Recent events further show that this research also has a direct impact on safety. In May 2026, a tragic attack occurred off Australia's Rottnest Island, where a man was attacked by a great white shark while swimming. Despite a rapid response from rescuers, he could not be saved. Experts warn that similar incidents may be related to current ocean conditions, such as murky water after rains or an increased presence of fish near the coast, which attract sharks.

This is precisely why modern shark tracking is so important. Thanks to satellite data, scientists can better predict their movements, warn of risky areas, and help prevent dangerous encounters. However, they also emphasize that shark attacks remain very rare, and most of these animals do not pose a direct threat to humans.

In the future, further technological development is expected, which will enable the collection of even more detailed information. New sensors could, for example, monitor the chemical composition of the water or food availability, which would help to better understand not only sharks themselves but also the functioning of oceans as a whole.

Shark tracking is thus becoming one of the most important tools of modern marine science. It helps uncover the secrets of their lives, increase human safety, and at the same time protect these fascinating but still endangered predators. 🦈

Author: Miri Svobodová