Although they are often bracketed together, 'nature' and 'science' are only loosely related topics. Sönke Johnsen's look at life in the open sea (both for scientists and its inhabitants) could have ended up as something close to the David Attenborough end of the spectrum, but I'm pleased to say that although it's more descriptive than some popular science, the book still gives us more insights than 'nature' books and TV provide, from its marine biology focus. Johnsen starts by remembering his first experience of the oceans - the same as most of us from seaside holidays. As he puts it 'I thought the beach was the ocean; that somehow the whole ocean was the sound of breaking waves, laughing gulls, and greenish murky water that smelled faintly of rotting seafood.' By the time he made graduate school as a marine biologist he saw the ocean as 'an oversized aquarium, clear and packed with life... If the beach was the peel of the ocean, though, ...