Chances are when you think of sharks, it's the great white or hammerhead that swim into view. But, there are over 400 species swimming in the oceans today. So, check out...

• a shark that has a mouth big enough to fit around a double bed
• the special features and tactics they use to catch prey
• the stories of brave (and lucky) people who have survived shark attacks
• why sharks need our protections to stop becoming extinct

True stories, fascinating science, with superb photographs and action-packed text take you down to the depths to view an array of fascinating sharks.