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, I was still only in the rind...' It was only as a post-doc that he started to understand the sheer variety and complexity of life in the open seas.
Once we start talking about the 'ocean less visited', a natural tendency is to think of the collection of deep sea oddities that are regularly portrayed in nature programmes - but Johnsen makes it clear that that what he's covering is top 1,000 feet or so of the ocean, because, perhaps surprisingly, it has received far less attention.
This book is a joyous invocation of the experience of a marine biologist - we get some fascinating insights into life on a research vessel - and what it is about this part of the seas that requires living creatures to cope with a whole range of problems from the basics of gravity and water pressure to the essentials of survival. Johnsen's earliest research interest had been around vision and, for instance, he brings out the difficulties of understanding the sight-related abilities and limitations of organisms in this 'pelagic' part of the seas.
I'm not a natural target for biology books, and the ones that have generally really caught my attention have been those with something of an orientation to the physics-related aspects of life, such as Philip Ball's remarkable How Life Works. But Johnsen's infectious storytelling engaged me from page one. This is simple reading pleasure for anyone who has felt that same seaside interest in the ocean that first captured Johnsen's attention in his childhood and wants to discover what goes on away from shore. Delightful.
Review by Brian Clegg - See all Brian's online articles or subscribe to a weekly email free here
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