Many bivalves can hear! Pearl oysters, for example, are sensitive to sounds between 10 and 1000 Hz, with the low end unfortunately aligning well with the sounds of ship engine noise, drilling and other noise pollution. Researchers found a group of oysters subjected to such noise abandoned their usual behavior of bunching together (common in many bivalves) and closed their valves more frequently and more tightly. Other studies showed this reduced bivalves' ability to feed and grow! #clamFacts
