Explore ASL
ocean instruments
Discover acoustic instruments for monitoring zooplankton, fish, sediments and ice.
Acoustic Zooplankton Fish Profiler monitors the presence and location of zooplankton, fish and sediments.
ASL Environmental Sciences develops instruments for oceanographic, acoustic and ice research. Its services include equipment leasing, remote sensing and scientific consulting.

AZFP – Acoustic Zooplankton Fish Profiler
The Acoustic Zooplankton Fish Profiler™ can monitor the presence and abundance of zooplankton and fish within the water column by measuring acoustic backscatter returns with ultrasonic frequencies.

Ice Profiler
An advanced upward looking sonar instrument, mounted on the ocean floor or submersibles for measuring ice draft. To estimate ice forces, production rates, and mass balances, accurate measurements of ice thickness are essential.