UC San Diego researchers are using underwater acoustic equipment to listen in to the sounds of whales and other endangered marine life in the Gulf of Mexico. The goal is to study the oil spill's effects on the animals.

UC San Diego has already sent one research vessel to study the effects of the Gulf oil spill on marine mammals. Another boat left last week and another trip is planned at the end of July.

Along with tagging mammals and taking tissue samples, UCSD researchers also plan to use underwater listening devices.

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