Into the Deep with Elephant Seals
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Thousands of northern elephant seals – some weighing up to 4,500 pounds – make an annual migration to breed each winter at Año Nuevo State Reserve, on the San Mateo County coast. Marine biologists are using high-tech tools to explore the secrets of these amazing creatures, which can hold their breath for an hour and dive a mile below the surface.
Into the Deep with Elephant Seals