In his book "A Short History of Nearly Everything," Bill Bryson highlights the alarming statistics regarding shark populations, referencing a 1994 estimate from the World Wildlife Fund. It was reported that approximately 40 to 70 million sharks are killed annually, illustrating the severe impact of human activities on these essential marine creatures. This staggering figure emphasizes the urgent need for conservation efforts to protect sharks and maintain ecological balance in ocean ecosystems.

Sharks play a crucial role in marine environments, helping to regulate fish populations and maintain the health of oceanic habitats. The high number of sharks being killed each year poses significant threats to biodiversity and the overall health of the oceans. Bryson's work serves as a reminder of the broader implications of our interactions with nature and the importance of understanding and preserving the delicate balance of life on Earth.