Santa Barbara Channel

The Santa Barbara Channel is a portion of the Pacific Ocean which separates the mainland of California from the northern Channel Islands. It is generally south of the city of Santa Barbara, and west of the city of Ventura.

It trends east-west, is approximately 130 kilometres (70 nmi) long and averages about 45 kilometres (24 nmi) across, becoming narrowest at its easternmost extremity where Anacapa Island is about 30 kilometres (16 nmi) from the mainland. During the last ice age, the four northern Channel Islands, including Santa Rosa Island, were conjoined into Santa Rosae, a single island that was only five miles (8 km) off the coast.

The Santa Barbara Channel is considered a scenic location, with the islands visible from the mainland on clear days.

Excursion boats cross the channel, taking visitors to watch whales and visit the islands. In the perpendicular (east-west) direction, huge cargo ships and tankers occupy a major shipping lane on their way to or from the ports of Los Angeles and Long Beach.

The Channel is the location of numerous oil fields, some of which have substantial reserves. These include the Ellwood, Summerland, Carpinteria offshore and Dos Cuadras fields. In 1969, the Dos Cuadras was the point of origin of a major oil spill, which came about when oil spurted at high pressure through faults and cracks around a zone which had recently been drilled for the first time. Public outrage over the massive environmental damage inflicted by this spill, which covered hundreds of square miles of the channel and fouled beaches from Ventura to Goleta, was a major spur to the budding environmental movement. Some oil exploration and production activities continue in the area, in spite of vigorous opposition from local organizations, such as Santa Barbara-based Get Oil Out (GOO).

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