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Related Experiment Video

Updated: Feb 12, 2026

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Locating fish bomb blasts in real-time using a networked acoustic system.

R Showen¹, C Dunson¹, G H Woodman²

¹ShotSpotter Inc., Suite 210, 7979 Gateway Blvd, Newark, CA 94560, USA.

Marine Pollution Bulletin

|March 25, 2018

Summary

This study demonstrates real-time fish blast detection in Sabah, Malaysia, using hydroacoustic sensors. The technology accurately locates underwater blasts, aiding in the management of blast fishing and reef protection.

Keywords:

Acoustic location Blast fishing Destructive fishing Fish bombing Fisheries enforcement Reef management

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Area of Science:

Marine Biology
Acoustic Technology
Conservation Science

Background:

Blast fishing poses a significant threat to coral reef ecosystems globally.
Effective monitoring and enforcement are crucial for mitigating illegal fishing activities.
Existing acoustic technologies offer potential for real-time detection of underwater explosions.

Purpose of the Study:

To demonstrate the efficacy of a networked hydroacoustic array for real-time fish blast location.
To assess the accuracy and speed of blast detection using adapted gunshot location technology.
To evaluate the potential of this technology for managing blast fishing and protecting marine environments.

Main Methods:

Deployment of a networked hydroacoustic array with six sensors (fixed and mobile) up to 9 km apart.
Utilized ShotSpotter gunshot location system principles for underwater acoustic signal detection.
Installation of a smaller three-sensor system for monitoring uncontrolled blasts in Eastern Sabah.

Main Results:

Accurate determination of blast locations within 60-meter accuracy.
Real-time display of blast locations on internet-connected computers within 10 seconds.
Successful detection of both controlled test blasts and uncontrolled blasts from local fishermen.

Conclusions:

Existing hydroacoustic and location-detection technologies are effective for real-time fish blast monitoring.
This technology can significantly enhance the management of blast fishing through improved detection and enforcement.
The system supports enhanced community engagement in marine conservation efforts and reef protection.