About two million tonnes of oil are spilled into the sea every year from oil tankers, mostly during collisions or other accidents when they are on their way to the destination. These spilling will drastically affect the birds and animals. Most spills are small around 7 tonnes or less, but some are much more serious. When huge quantities of oil are discharged into the sea and washed up on shorelines they harm many birds and other creatures.
The 1989 grounding of the Exxon Valdez in Prince William Sound, Alaska, Caused the USA’s worst oil spill. The amount spilled was much smaller in quantity than the spills listed (35,000) tonnes, but thousands of birds, fish, sea otters, Seals and killer whales were killed.
Atlantic Empress and Aegean captain, off Tobago spilled out 287,000 tonnes of oil in the year 1979. Another such incident is by ABT summer, off Angola in the year 1991, spilled out 260,000 tonnes of oil approximately. Castillio de Bellver, off Saldanha Bay, South Africa in the year 1983, spilled out 252,000 tonnes of oil approximately. These are some of the biggest oil spills by oil tankers in the past years.
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