This book takes us on a fascinating journey far down into the depths of the ocean. Here are hundreds of thousands of living creatures, including the many varieties of plant life, which live at various levels of the undersea world. We see that the sea itself has many different colours—green and blue and orange near the surface, brilliant blue in the middle waters, and densely black in the depths.

Down through these changing layers of water, this book takes us on a fascinating journey to see sights that dazzle the eye and events full of drama and excitement. With full regard for scientific facts, the authors describe with poetic wonder the amazing phenomena to be found in the sea, and the pictures throughout the book give the reader a real understanding of this undersea world.

From the dust jacket