For tiger sharks, there鈥檚 just no place like Maui County.
The habitat around Maui, Lanai, Molokai and Kahoolawe is ideal, with plenty of favorites on the menu like green sea turtles.
But these are also popular places for people to surf and swim, which is part of the reason researchers suspect聽Maui has had twice as many unprovoked shark attacks over the past 20 years as any other county in Hawaii.
Tiger shark bites peaked in 2012 and 2013, including two fatal attacks that spurred the state Department of Land and Natural Resources 鈥 working with the , a data collection project聽鈥 to commission a nearly $200,000 two-year study of shark spatial behavior on Maui.
The University of Hawaii鈥檚 conducted the research, which culminated this week in a report finding that the spike most likely isn’t due to changes in what humans are doing.
Carl Meyer, the study鈥檚 principle investigator, said the combination of more tiger sharks being around Maui Nui may explain the higher number of shark bites. But he also cautioned against either presuming or ruling out that the primary cause for more bites聽is that more people are engaging聽in ocean recreation activities around聽Maui.聽
鈥淗owever, despite the routine presence of large tiger sharks in waters off our beaches, the risk of being bitten remains extremely small, suggesting tiger sharks generally avoid interactions with people,鈥 Meyer said in a DLNR release Thursday.
Shark bites around Maui reached a record high of eight in 2013. There was one bite reported in 2015.
Meyer said shark behavior didn’t change year to year, and there was no shift in human behavior to account for the drop to only one shark bite last year.聽
鈥淭hese spikes occur all over the world, and are most likely due to chance,鈥 he said.
Bruce Anderson, administrator for DLNR’s Division of Aquatic Resources, said the study provides important new insights into tiger shark movement behavior around Maui, and helps answer some questions about why that island has led the state recently in shark bites.聽
鈥淲e agree with the study’s recommendation that the best approach to reducing numbers of these incidents is to raise public awareness of what people can do to reduce their risk of being bitten,鈥 he said. 鈥淭his has been our focus for a long time. People who enter the ocean have to understand and appreciate that it is essentially a wilderness experience. It’s the shark’s house, not ours.鈥
The study made clear that shark culling is not a solution. Research from previous studies has shown that sharks are so transient that if one is killed, another will eventually take its spot.
Anderson said his division will continue to work with other agencies to expand outreach regarding hazards in the ocean, such as drownings, to include shark safety information 鈥渟o people can make well-informed, fact-based decisions.鈥
The Pacific Islands Ocean Observing System has made the data from the tiger sharks that were tagged , making it possible to look at how individual sharks have moved around the islands over the past couple years.
鈥淧roviding ocean users, agencies, residents and visitors with relevant ocean data is our priority,鈥 Melissa Iwamoto, PacIOOS director, said in the release. 鈥淲hile the tracks do not serve as a warning or real-time monitoring system, they are a great way to raise awareness about the ocean environment and to inform long-term decision-making.”
Read the full study below.
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Nathan Eagle is a deputy editor for Civil Beat. You can reach him by email at neagle@civilbeat.org or follow him on Twitter at , Facebook and Instagram .