We talk to ocean scientist Dr Nic Flemming about his new book - Apollonia on my Mind - The memoir of a paraplegic ocean scientist. The ocean conceals secrets, ancient, modern, and future. Nic Flemming’s memoir recounts the life of a pioneer in ocean science. Each chapter describes a thread that structured his work: underwater cities, submerged Ice Age caverns dripping with stalactites, the limits to ocean exploitation, ocean climate change, prehistoric settlements on the continental shelf, ocean law, and safe scientific diving. Flemming is paralysed from the chest down and has used a wheelchair for the past 52 years; one chapter assesses how he has continued to work in rough conditions and at sea, visiting 60 countries since his accident.