Almost 90 drones plunged into the water at Sydney's Darling Harbour on Monday night after malfunctioning mid-air during a live performance at the city's annual Vivid Sydney festival. Videos shared on social media captured the moment the drones began glitching in formation before falling into Cockle Bay, a sheltered inlet within the harbour. Onlookers could be heard asking one another whether the dramatic descent was part of the show — it was not.

SkyMagic, the drone display company behind the performance, attributed the failure to an unexpected change in radio frequency, which disrupted the signals used to control the aircraft. Organisers confirmed that 89 drones entered the water. Vivid Sydney, which runs for three weeks across Sydney's city centre each year and features large-scale light installations, drone displays, and art performances, subsequently cancelled the aerial shows planned for Tuesday and Wednesday while the incident is investigated. Sabotage has been ruled out.

Although the incident unfolded in front of a large crowd, officials stated that no drones fell outside a designated safety zone and that no members of the public were injured. However, harbour workers present at the scene described a narrower escape than the official account suggested, with one telling local media that the drones came down within metres of people nearby and that it was fortunate nobody was struck.

Organisers issued a formal apology for the "disappointment and inconvenience caused to attendees" and said the drone operators had cancelled the show in line with standard safety protocols. The full circumstances of what triggered the frequency change are still under investigation.

The incident highlights the technical vulnerabilities of large-scale drone shows, which have become increasingly popular at major public events worldwide. Vivid Sydney is scheduled to continue until 13 June, with the remaining programme of ground-based light installations and other performances expected to go ahead as planned.