Baby sharks grow up in New Jersey’s back bays. Climate change could threaten the nurseries

Key points

• Three shark species—sandbar, smooth dogfish, and sand tiger—rely on New Jersey's coastal salt marshes as nurseries for juveniles
• Salt marshes provide protected, shallow-water habitat essential for young sharks to survive and develop before reaching deeper ocean waters
• Climate change threatens these nurseries through rising sea levels, temperature shifts, and altered water chemistry
• Loss of nursery habitat could significantly impact regional shark populations and marine biodiversity
• New Jersey's back bays represent critical infrastructure for Atlantic shark reproduction and ecosystem health

FAQ

Why are New Jersey's salt marshes important for sharks?

Salt marshes provide shallow, protected waters where young sharks can develop safely away from predators and strong ocean currents. These nursery areas are crucial for juvenile sharks to grow and build strength before venturing into deeper ocean waters.

Which shark species use New Jersey's coastal areas as nurseries?

Three main species use New Jersey's salt marshes as nurseries: the sandbar shark, smooth dogfish, and sand tiger shark. Each species depends on these shallow coastal habitats during vulnerable early life stages.

How could climate change harm these shark nurseries?

Rising sea levels, warmer water temperatures, and changes in salinity could alter the environmental conditions these nurseries require. These shifts could make marshes less suitable for juvenile sharks or reduce the total area of available nursery habitat.