Unprovoked Shark Attack Frequency Rates

Unprovoked Shark Attacks in the World and the USA

1960-Present

This graph of unprovoked shark attacks in the World from 1960 through 2016 shows the portion occurring in the USA. The drop in recorded attacks in 1969 is a result of a loss of funding to support the ISAF, and hence less effort reporting and organizing of attacks (see The History of the International Shark Attack File). The apparent increase in attacks after 1987 is in part an artifact of the ISAF moving to the Florida Museum of Natural History, resulting in an increased scope of coverage and reporting of attacks. The apparent increase in attacks after 1993 is in part an artifact of a breakthrough in communication with Volusia County (FL) emergency responders and lifeguards, resulting in the reporting of a greater number of minor attacks that had previously gone unreported.

Last updated: January 24, 2017

Unprovoked Shark Attacks in the USA and Florida

1960-Present

This graph of unprovoked shark attacks for the United States from 1960 through 2016 shows the portion occurring in Florida. The drop in recorded attacks in 1969 is a result of a loss of funding to support the ISAF, and hence less effort reporting and organizing of attacks (see The History of the International Shark Attack File). The apparent increase in attacks after 1987 is in part an artifact of the ISAF moving to the Florida Museum of Natural History, resulting in an increased scope of coverage and reporting of attacks. The apparent increase in attacks after 1993 is in part an artifact of a breakthrough in communication with Volusia County (FL) emergency responders and lifeguards, resulting in the reporting of a greater number of minor attacks that had previously gone unreported.

Last updated: January 24, 2017

Unprovoked Shark Attacks in Florida and Volusia County

1960-Present

This graph of unprovoked shark attacks for Florida from 1960 through 2016 shows the portion occurring in Volusia County. The drop in recorded attacks in 1969 is a result of a loss of funding to support the ISAF, and hence less effort reporting and organizing of attacks (see The History of the International Shark Attack File). The apparent increase in attacks after 1987 is in part an artifact of the ISAF moving to the Florida Museum of Natural History, resulting in an increased scope of coverage and reporting of attacks. The apparent increase in attacks after 1993 is in part an artifact of a breakthrough in communication with Volusia County (FL) emergency responders and lifeguards, resulting in the reporting of a greater number of minor attacks that had previously gone unreported. Volusia County, Florida has a high number of shark-human interactions as a result of extremely high aquatic recreational utilization of its waters by residents and tourists, especially surfers. Most of these interactions result in minor bites or abrasions from small sharks.

Last updated: January 24, 2017

Unprovoked Shark Attacks in Volusia County

1960-Present

The drop in recorded attacks in 1969 is a result of a loss of funding to support the ISAF, and hence less effort reporting and organizing of attacks (see The History of the International Shark Attack File). The apparent increase in attacks after 1987 is in part an artifact of the ISAF moving to the Florida Museum of Natural History, resulting in an increased scope of coverage and reporting of attacks. The apparent increase in attacks after 1993 is in part an artifact of a breakthrough in communication with Volusia County (FL) emergency responders and lifeguards, resulting in the reporting of a greater number of minor attacks that had previously gone unreported. Volusia County, Florida has a high number of shark-human interactions as a result of extremely high aquatic recreational utilization of its waters by residents and tourists, especially surfers. Most of these interactions result in minor bites or abrasions from small sharks.

Last updated: January 24, 2017


© International Shark Attack File
Florida Museum of Natural History, University of Florida