Scientists have found out that marine animals regularly discard parts of their DNA into the aquatic environment, that is, their habitat. Known as environmental DNA (eDNA), it can be found in water samples, telling scientists if the species is present in the region. Soon the knowledge of this fact can help to warn beach visitors that next to white sharks and swimming is not worth it.
Scientists from the University of California, Santa Barbara, the US Geological Survey and the University of California, Long Beach, and the Central University of Michigan were looking for markers of the ecological DNA of white sharks in water samples taken from various regions of the ocean. They were able to correctly determine what kind of shark is in this or that region of the ocean, only thanks to water samples.
However, there is one problem. Sharks can swim long distances after the release of eDNA. Scientists are thinking of creating a system that can analyze water samples, taking into account possible directions of shark movement and their swimming speed.
In the case where the system confirms the presence of a shark near the beach at a distance of one mile, it automatically notifies rescuers on the beach. This will protect people from danger.