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Ship traffic off San Francisco Bay re-routed to protect whales

LOS ANGELES — Ship traffic off the California coast will be re-routed under new rules designed to protect slow-moving endangered whales from ship collisions.

The International Maritime Organization has approved vessel lane changes on approaches to San Francisco Bay and the ports of Los Angeles and Long Beach, and in the Santa Barbara Channel. The changes take effect next year after the Coast Guard goes through the rulemaking process.

Migrating blue, fin and humpback whales are prone to ship strikes since they are often lured to the California shoreline by plentiful krill. All three species are endangered. There are believed to be about 2,000 blue whales, 2,000 fin whales and 2,500 humpbacks in the northeast Pacific.

In 2010, five whales died in ship accidents in the area outside San Francisco Bay. Under the recently approved lane modifications, three lanes on the approach to the San Francisco Bay will be extended — a move that will limit interaction between whales and cargo ships within the Cordell Bank and Gulf of the Farallones national marine sanctuaries.

In the Santa Barbara Channel, where four blue whales were killed in vessel strikes in 2007, a southbound lane will be shifted a mile north, steering ships away from feeding grounds used by blue and humpback whales. Other lanes will be narrowed.


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