Awesome ecology full of mystery, shark mystery (national geographic separate vol

Introduction (from the publisher)
Sharks have been drawn as scary monsters in the movie, but scientific research has progressed significantly, and the mysterious ecology has gradually been revealed.

There are more than 500 types of sharks in the world, and the sharks who played the violent protagonist in the movie “Jaws”, whale sharks, which are as large as school buses, and thorns on the back with a depth of 800m deep water.It is surprisingly diverse, up to black crow sharks that drive away predators.
In the movie, a shark is drawn like a murderer, but in fact, the death of sharks is only about 4 per year around the world.

The shark is now in a crisis.Fishing, loss of habitat, pollution.All of these are declining the population to a dangerous level.
Since 1970, the number of ocean sharks and rays has been lost 71%.Each year, 100 million animals are killed due to fishing and shark fins.
Sharks, the top predators of the sea, play an extraordinary role in maintaining the balance of marine ecosystems.In other words, if there is no shark, the whole sea ecosystem will collapse.

This book introduces the creatures and sharks that symbolize the splendor of the sea from various angles, and clarify the whole ecology based on the latest scientific discovery.

【table of contents】
First approach the true appearance of sharks
Chapter 1 Shark as a symbol
Chapter 2 Learn about sharks
Chapter 3 Shoot sharks
Chapter 4 Protect the habitat of sharks
Chapter 5 Symbiosis with sharks