Sparkling dolphins swim off our coast, but humans are threatening these natural light shows
- Written by Dr Vanessa Pirotta, Marine scientist and science communicator, Macquarie University

It was 2 am on a humid summer’s night on Sydney’s coast. Something in the distance caught my eye – a pod of glowing dolphins darted towards the bow of the boat. I had never seen anything like it before. They were electric blue, trailing swaths of light as they rode the bow wave.
It was a stunning example...