The Dance Centre will showcase online performances in the lead up to International Dance Day on April 29. The array of high-tech tools included aerial drones, electronic fish finders and data loggers equipped with satellite telemetry, a gyroscope, hydrophone and an underwater camera. Attached to the killer whales with suction cups, these devices allowed the scientists to record what the whales see and hear, as well as their movements in the water, and their diving and hunting behaviour. The video clips, collected from above and below the water, samples of which can be viewed here were arrest...