Passive Acoustic Recorders

Bioacoustics for scientific discovery

Loggerhead designs and manufactures underwater passive acoustic dataloggers
so you can study our natural world

Our goal is to help you do science with reliable, innovative tools and unparalleled expert support.

We offer traditional and
smart, AI-equipped audio recorders

Let’s identify the best instrument for your application

ACOUSTIC MONITORING

  • Noise measurements from construction, pile driving or seismic surveys

  • Presence of marine mammals, fish & other soniferous animals in sensitive areas

  • Boat & fishing activities in marine protected areas

  • Impacts of offshore wind on protected species

  • Population dynamics of fisheries & other economically important areas or species

ANIMAL BEHAVIOR & BASIC RESEARCH

  • Ocean soundscapes & baseline acoustic data collection

  • Distribution & seasonality of animals, including migration & spawning behavior

  • Behavioral responses to environmental events & noise

  • Characterization of unstudied or unknown marine animals

  • Biological basis and purpose of sound production in animals

PRODUCTS

Smart dataloggers

  • Edge-AI capable devices

  • Available as a deploy & recover device with one, two or four channel recording

  • Drifter with satellite communication

  • Buoy with satellite, solar power

  • Land-based station with wifi, cell or satellite & solar

  • Depth ratings from 500m to 6,000m

  • Continuous recording times from 10 days to 1-year

Benefits of using a recorder equipped with your custom neural net:

  • Automatically identify sounds of interest, saving hundreds of hours analyzing recordings

  • Real-time communication provides immediate reporting & data sharing to eliminate need for field work

Traditional recorders

  • Depth ratings from 500m to 6,000m

  • Continuous recording times from 10 days to 1-year

  • Standard D-cell batteries or rechargeable Li-Ion

  • PVC, anodized aluminum or titanium housing

  • Include hydrophone, housing, hardware, microSD card

  • Easy setup: no computer needed

  • Quick deployment & redeployment in the field