PISMO BEACH — Once a cherished central California fishery, Pismo clams went missing from their namesake beach for decades. The treasured shellfish, however, are now making a steady, triumphant return.

Young giant clams get necessary symbiotic algae from the feces of their parents, updating the age-old adage: one clam's trash is another clam's treasure. Coral reefs are a hotspot of biodiversity, ...

PISMO BEACH — Once a cherished local fishery, Pismo clams went missing from their namesake beach for decades. The treasured shellfish, however, are now making a steady, triumphant return. No one knows ...