The AZFP (Acoustic Zooplankton Fish Profiler) is a multi-frequency scientific echosounder designed for long-term autonomous monitoring of zooplankton and fish distributions in oceans, lakes, and rivers. ASL Environmental Sciences develops and manufactures AZFP systems for biological oceanography, fisheries research, and ecosystem monitoring.

When you need to study the water column

The ASL Acoustic Zooplankton Fish Profiler™ (AZFP), offers a new, economical way of obtaining reliable measures of marine environmental conditions in the water column. The AZFP™ can monitor the presence and abundance of zooplankton and fish within the water column by measuring acoustic backscatter returns at multiple ultrasonic frequencies. Other sonar targets realized from the sonar backscatter data include bubbles and suspended sediments.