The watery habitats of the world are home to a more varied and concentrated array of animal life than anywhere on dry land. This stunning guide contains an explanation of how certain key animal groups have evolved to live and breed within their different environments. There are full-colour artworks highlighting the special anatomy connected with respiration, reproduction, feeding, motion and buoyancy in creatures such as fish, echinoderms, molluscs and mammals. The detailed directory section provides a comprehensive overview to the vast array of marine and freshwater life that inhabit the globe. Each profile features a descriptive identification guide and contains a map to pinpoint distribution, plus information on habitat, size, breeding and more.