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Alarm at the Blue: Why Large Predators in the Balearic Sea Leave Almost No Traces

Studying Predators Around Mallorca Without Catching Them

Overview of eDNA, BRUVs, and tagging used to monitor sharks and rays near Mallorca, with caveats about timing and coverage.

Published: August 19, 2026
Alarm at the Blue: Why Large Predators in the Balearic Sea Leave Almost No Traces

Answer

How are researchers studying large predators around Mallorca without capturing the animals?

Scientists use environmental DNA to detect species from water samples, alongside non-invasive tools like BRUVs and telemetry tagging. Each method has limitations—eDNA can degrade quickly and timing matters—so a combination provides a clearer picture. This approach helps monitor sharks and rays around Mallorca without stressing wildlife.

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