Let's dive into the abyss of our planet's least explored ecosystems, we're headed into the oceans! With this appealing book, packed with remarkable images, future marine biologists will learn about the countless organisms that depend on each other in Earth's oceans as well as the extraordinary environments in which they live. Comprehensible flowcharts underline the importance of ocean organisms, such as the algae that provide most of the oxygen we breathe, as well as remarkable marine adaptations, such as echolocation. Motivated readers will also discover why our oceans need to be protected into the future.