Why Horseshoe Crab Blood Is So Valuable

Transcript

Every year hundreds of thousands  of horseshoe crabs arrive on the beaches of the Atlantic coast  of America to lay their eggs. And every year, hundreds of thousands  of horseshoe crabs are rounded up and brought to the lab - not to be killed, but  for their blood to be carefully extracted. These animals, often called living fossils, are  one of th... Read More