A substance stored in an aerosol can used to repel both living and explosive and/or inflatable sharks. It is often found on bat-helicopters or whereever Batman thinks it would come in handy.
Batman finds himself with a inflatable, explosive shark latched to his leg.

Batman: Robin! Get me the shark repellent bat spray!
by TheGammaGeek April 27, 2011
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A shark repellent spray is a product used to drive sharks away from an area with the goal of reducing the possibility of shark attacks occurring. SharkDefense & SharkTec (sharktecdefense.com)- are responsible for the only proven shark repellent spray products for consumers.
Swimmers use a shark repellent spray to drive off sharks in the surrounding area
by marshallteeter May 7, 2016
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