Tiny fiber-optic cables on seabed can do a lot more than you can imagine . A team of researchers has discovered that the same fibre-optic cables carrying internet and communication data beneath the oceans can also detect whales that are completely silent. Instead of relying only on whale calls, scientists found that the movement of a whale through water creates low-frequency pressure waves that these cables can sense. The discovery was made by researchers from the Norwegian University of Science and Technology (NTNU). The finding opens new opportunities for whale conservation, ocean monitoring, and scientific research using infrastructure that already exists across the world's oceans.
