Believing that we best protect what we know, he and his team are using Close Circuit Rebreathers to document for the first time – in some of the remotest parts of Indonesia – one of the least-known habitats of our Blue Planet: Mesophotic Coral Ecosystems. These deep-reef environments are challenging to investigate with regular open circuit diving as they are typically found beyond recreational dive limits, at depths of 40 to 150 metres. Images play a crucial role in Alexis’ work, showcasing the unseen and the unknown. They are a non-destructive way to collect important scientific information, and they help reconnect people to the natural world by conveying emotions and raising awareness. This makes them a powerful medium to encourage behavioural change and advocate for better conservation of our oceans.