"We were in Mauritius, shooting for our documentary film "The Journey". Leina was six months into her pregnancy. We had set out early morning in search of sperm whales. A broad, dark shape on the surface caught our eye…For a moment, our hearts skipped a beat when we thought we’d found the whales. Instead, a gigantic school of pufferfish greeted us. They were well over a thousand and Leina started diving amongst them, disappearing in the cloud, teasing them into infinite shapes. It was fascinating to observe how swiftly they changed course, moving as one entity - a perfect illustration of collective intelligence."