HONOLULU (AP) - Joint U.S. and Japanese research shows tiger sharks repeatedly swim up and down through the water to search for prey.
The Hawaii Institute for Marine Biology said in a statement Monday researchers installed digital cameras and devices that record swimming speed, depth, temperature and acceleration on four tiger sharks west of the Big Island.
Carl Meyer, the U.S. lead on the project, says scientists have long debated the reasons why tiger sharks practice yo-yo diving but have only recently developed the tools to measure the behavior. The institute says research results are due to be published by the end of the year.
The study is joint project between the Hawaii Institute of Marine Biology, University of Tokyo, the Japanese National Institute for Polar Research, and the University of Florida.
Copyright 2011 by The Associated Press. All Rights Reserved.
The chairman of the U.S. Joint Chiefs of Staff told reporters that President Donald Trump directly has "told us to develop credible viable military options and that's exactly what we're doing."More >>
A massive air and sea search is underway for five missing soldiers who were on board an Army chopper that crashed late Tuesday off Oahu.More >>
A growing number of business leaders on the councils had openly criticized his remarks laying blame for the violence at a white supremacist rally on "both sides."More >>
The Hokule'a returned to the ocean Wednesday from her home at the Sand Island to begin a six-month "mahalo" tour to 37 ports around the Hawaiian Islands.More >>