Sonar.

This is coolbert:

Underwater combat swimmer. Naval commando. Anti-naval commando.

Technology hitherto unavailable for anti-naval commando operations now exists? An alternative to crude and probably ineffective methods of warding off naval commando asymmetric attack has been developed?

From the Sheldon Adelson Internet web site Israel Hayom for the story!

"Israeli researchers develop breakthrough sonar technology for identifying hostile divers"

"With NATO funding, University of Haifa researchers develop innovative system capable of differentiating between divers attempting to sabotage ships, ports and aquatic life."

"Researchers at the University of Haifa have created an innovative system for identifying hostile divers attempting to approach ships or ports in an attempt to sabotage strategic targets."

Technology does exist to detect approaching underwater swimmers of the naval commando type. Such technology as currently available unable to successfully "differentiate" between marine life and a human diver? Lots of false positives? Current technology effective but only to a degree? NOW we have better?

coolbert.