shark section on the WWF website 400 different species 400 species of sharks more than 400 species of sharks worldwildlife.org shark protector more than 400 known species of sharks Shark www.worldwildlife.org/species/shark more than 400 known species of sharks WWF worldwildlife.org WWF over 400 species of sharks 40 feet long to just 8 inches over 400 species