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How do scientists track shark migrations?
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shark
Shortfin mako shark (Isurus oxyrinchus), found throughout tropical and temperate seas worldwide.
Scientists track shark migrations primarily through the use of tagging programs. Historically, researchers have relied on tagging returns, where individual sharks are marked and later recovered to provide data on their movements between specific locations.1
Modern advancements have significantly improved this process through the use of satellite tags. These devices are designed to continuously beam signals to orbiting satellites whenever a shark surfaces. This technology allows scientists to monitor and better understand complex migratory patterns, including north-south movements and long-distance transoceanic journeys.1