The 2011 yearly total of 75 unprovoked attacks was lower than the 81 unprovoked attacks recorded in 2010. However, the number of worldwide unprovoked shark attacks has grown at a steady pace since 1900 with each decade having more attacks than the previous.

The numerical growth in shark interactions does not necessarily mean that there is an increase in the rate of shark attack; rather it most likely reflects the ever-increasing amount of time spent in the sea by humans, which increases the opportunities for interaction between the two affected parties.

“We’ve had a decade-long decline in the number of attacks and a continued decline in the fatality rate in the U.S.,” says ichthyologist George Burgess, director of the file housed at the Florida Museum of Natural History on the UF campus.

“But last year’s slight increase in non-U.S. attacks resulted in a higher death rate. One in four people who were attacked outside the U.S. died.”

Despite the number of deaths being higher than other years, people should remember how much of a threat humans are to sharks, Burgess said. With worldwide over-fishing, especially to meet demands for flesh and fins used in shark fin soup, an expensive Asian delicacy, humans pose a greater threat to elasmobranchs (sharks, skates and rays) than sharks do to humans.

“We’re killing 30 to 70 million sharks per year in fisheries — who’s killing who?” Burgess said. “The reality is that the sea is actually a pretty benign environment, or else we’d be measuring injuries in the thousands or millions per year.”

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