NYPD demonstrates shark spotting technology at Rockaway Beach as sightings increaseBrian Shlonsky has the latest on how the technology works from Rockaway Beach. Brian Shlonsky has the latest on how the technology works from Rockaway Beach. Brian Shlonsky has the latest on how the technology works from Rockaway Beach. Brian Shlonsky has the latest on how the technology works from Rockaway Beach. According to the Parks Department, so far this beach season, there have been 45 beach closures due to shark sightings, all at Rockaway Beach.