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A hypothetical magnitude-9.3 earthquake near Alaska’s eastern Aleutian Islands could bring a damaging tsunami to the San Francisco Bay Area in about five hours, and to L.A. and Orange counties in about six.

Along the West Coast, marbled murrelets are found regularly from Santa Cruz, California, to the Aleutian Islands.

For instance, song sparrows that live year-round in the Aleutian Islands can be up to three times larger than their counterparts in the coastal marshes of California.

A federal fishery agency reported this week that 10 killer whales were caught in the gear of trawl net vessels fishing this year in the Bering Sea and North Pacific waters off the Aleutian Islands.

The Russian-Chinese warships also circled part of the Aleutian Islands archipelago.