The shark is so well adapted to its element that its existence on the planet actually predates trees. When people enter that element in incresing numbers, as they have in recent years, the results can be tragic and seemingly arbitrary. This book contains harrowing personal stories of shark attack survivors, expert opinions from marine biologists and the latest scientific studies of shark behaviour. Author Tom allen has researched all known shark incidents from all over the world. His analysis explains: why so many attacks occur in water less than five feet deep; which species are killers; what triggers sharks; behaviour just before an attack; whether shark nets increase swimmer safety levels; environmental and seasonal conditions that contribute to an increase in attacks; why is it better to be below a shark than above it.