Dr. John Tanacredi has been studying horseshoe crabs (Limulus polyphemus) for decades. Though they aren't experiencing a precipitous decline in population numbers, they have fallen by about 10% in the last 10 years, he says. He's starting a breeding program in West Sayville, N.Y., once home to the Blue Points oyster business.
Produced by Aleszu Bajak, Science Friday.
