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Hawaiʻi Tiger Shark Tracking

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This PacIOOS Voyager map shows the movements of several tiger sharks who were fitted with satellite tags near Maui and Oʻahu in late 2013 through early 2015. These tags intermittently track their locations over time as the shark's dorsal fin breaches the water's surface. Pick a shark from the left-hand menu bar to watch an animation. Placing your cursor over a location spot gives you the date and time of the event. The square symbol indicates where the shark was originally tagged. There is a level of uncertainty associated with some of these locations - there may be over a mile in error associated with any given point. Disclaimer: This is not a warning system and does not provide real-time monitoring.


Tiger shark. Photo: Albert Kok
Tagging a tiger shark. Photo: Luiz Rocha
SPOT tag on dorsal fin. Photo: HIMB

Maui has witnessed a higher number of unprovoked shark attacks than in previous years, and local spear fishers report increasing boldness of large sharks encountered in Maui waters. In order to select appropriate management responses to these events, tiger sharks were fitted with dorsal-fin mounted satellite transmitters to monitor their movements. This information will help determine whether sharks around Maui are more resident (more "site-attached") than they are around the other Hawaiian Islands and whether they exhibit greater use of inshore habitats than in other locations.

With funding from the State of Hawaiʻi Department of Land and Natural Resources (DLNR) Division of Aquatic Resources (DAR), these data were collected by Principal Investigators Carl Meyer, Ph.D. and Kim Holland, Ph.D. along with other members of the Shark Research Team of the Hawaiʻi Institute of Marine Biology (HIMB) of the School of Ocean and Earth Science and Technology (SOEST) at the University of Hawaiʻi at Mānoa (UH).

Hawaiʻi Institute of Marine Biology shark tracking team tagging a tiger shark.

For further information, visit HIMB Tiger Shark Research.

For historical tiger shark tracks and other tagged marine species, visit PacIOOS Voyager.

Please consider acknowledging PacIOOS in any distribution or publication of data as follows: Data provided by PacIOOS (www.pacioos.org), which is a part of the U.S. Integrated Ocean Observing System (IOOS®), funded in part by National Oceanic and Atmospheric Administration (NOAA) Award #NA11NOS0120039.