Stretching along one-fifth of the California coast, the 5,300-square-mile (13,700-square kilometer) Monterey Bay National Marine Sanctuary extends an average of 30 miles (48 kilometers) from shore, reaching as far as 53 miles (85 kilometers) out to sea. On shore, it begins just north of San Francisco and winds south to Cambria. Along the way, its shore varies from sheer cliffs to sandy beaches to rocky coves. The equally varied topography beneath the sea is constantly replenished with cool, nutrient-rich waters carried by the California Current, creating a nurturing habitat for all kinds of marine life.

Humans have made their homes along these shores for more than 10,000 years. They have depleted some natural resources and nearly wiped out others. But the region’s varied landforms and unpredictable currents have also exacted a sort of revenge: More than 1,250 shipwrecks have been reported in local waters.

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