Shark data for hurricane prediction

Notes

• University of Delaware researchers are utilizing sharks as mobile, near-real-time ocean-data observers to improve hurricane intensity predictions.
• Sharks are equipped with CTD (Conductivity, Temperature, and Depth) tags attached to their dorsal fins.
• CTD tags measure electrical conductivity (salinity proxy), temperature, and depth as sharks swim and dive.
• Data is transmitted to satellite networks whenever the shark surfaces.
• The primary focus is measuring the 'mixed layer' of the ocean, which holds the heat energy that drives hurricane intensity.
• Species identified as suitable candidates in the North Atlantic include shortfin mako, blue sharks, smooth hammerheads, and juvenile great whites.
• Sharks are preferred over marine mammals due to their abundance, wide distribution, and ease of access.
• Tagging procedures are conducted under institutional animal care oversight, using materials designed to corrode and fall off, with health checks performed prior to release.

Part of a longer story

This is day 1 of 2 in Use of shark-mounted sensors for hurricane intensity forecasting, which has been running since 11 August 2026. Reading it whole is usually worth more than reading today alone — the exam asks how something developed.

• Sharks used for hurricane predictions After
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