Most people don't realize horseshoe crab blood helps keep vaccines and other injectable medicines safe. The groups allege the company injures and kills horseshoe crabs during the blood-harvesting process, even though New Jersey law requires crabs collected for biomedical purposes to be returned to the water unharmed. READ MORE: Cops Want All Of South Jersey To Adopt This Nighttime Safety RoutineWhy This Matters Beyond The BeachFor South Jersey, this is about much more than one species. Every spring, thousands of horseshoe crabs come ashore along the Delaware Bay to spawn. 8 Places In South Jersey To Hide If You Never Want To Be Found If you had to go off the grid in South Jersey, where would you run to?