system and method for using an impact-activated device to repel sharks from marine geophysical assessment equipment. Methods and systems for using an impact-activated device to repel sharks from marine geophysical assessment equipment are disclosed. One embodiment reveals a marine geophysical assessment system comprising: a marine geophysical assessment equipment configured to be located in a body of water when in operation; and an impact activated device coupled to marine geophysical equipment, wherein the impact activated device comprises a circuit configured to release a shark repellent in response to a predetermined impact on the impact activated device.
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