Riddles of the Seas and Oceans

Who are acanthasters? How does a nautilus move? Why is the gravel round? Who lives in salt ponds? Are reef sharks aggressive? 

The 'School Encyclopedia' series will be an indispensable assistant for schoolchildren when preparing for reports, tests, and presentations. 

In the books of the series, strict scientific research is transformed into concise and understandable texts that tell readers about the entire diversity of the surrounding world.