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This satellite image illustrates the temperature variation in the Northern Channel Islands. Temperature ranges are represented as follows: blue = 44-52º F, green-yellow = 56-64º F, and orange-red = 65-72º F. The California current brings cold water down from the Gulf of Alaska, which influences the northwestern islands: San Miguel, Santa Rosa, and part of Santa Cruz. Warm currents affect Santa Barbara Island (not pictured), Anacapa and the eastern side of Santa Cruz. (photo: Channel Islands NMS)

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