Wildlife Acoustics Blog


What's new in the SM3M?

What's new in the SM3M?

Our new SM3M marine recorder is full of improvements on our popular SM2M model.

Wondering what’s changed?Here’s a quick rundown of a few of the features we’ve added to make this our most intuitive and dependable marine recorder and noise logger yet!

Reliability Improvements

  • Heavy duty hydrophone cage offers greater protection
  • Hydrophone waterblock prevents leakage into the device
  • New heavy duty carrying case for the SM3M submersible


  • Easier to program
  • Alerts you when you’ve made a mistake in loading, editing, or running a program
  • Complete control over all internal parameters
  • Automatic set up--simply connect your hydrophone(s), load a program, and press start
  • Status button lets you quickly check usage, battery voltage, and more
  • Metadata embedded in the files and enhanced self diagnostics

Advanced Technology

  • New circuit design
  • Improved battery life
  • Temperature-controlled clock crystal maintains clock accuracy at extreme temperatures
  • Native SDXC support, meaning no re-formatting needed
  • Nap mode allows recorder to improve battery life by up to 50%
  • Record on 2 channels up to 256 kHz or one channel up to 384 kHz
  • ...and more!

If you have any questions about our latest marine recorders, don't hesitate to contact us and we'd be happy to help!

Noise logging with the SM2M+ Deep Water and Submersible recorders

Noise logging with the SM2M+ Deep Water and Submersible recorders

Pile drivers, shipping traffic and off-shore oil exploration are just a few of the anthropogenic contributors to an increasingly noisy ocean environment. We can only guess at the effects on marine life when noise levels can exceed 200 dB SPL every 10 seconds. As a result, our SM2M+ Deep Water and Submersible marine recorders are being used not only for recording the sounds of marine life, but also for noise logging. In fact, our products are unique in that they are designed to serve both functions.

With a recording bandwidth of 2hz to 48kHz (or 192kHz for the ultrasonic option), the SM2M+ recorders are perfect for capturing any ocean noise. The recorders log recording levels while making recordings and the log can be quickly converted to actual sound pressure levels (SPL) using the gain and hydrophone sensitivity settings. We provide calibration data with all recorders so as to assure accuracy of the SPL readings. Both ambient and peak measurements are logged.

The SM2M+ recorders also have great battery life, and there are several options to extend deployment. For example, you can employ a recording schedule to stop/start recording at select times. The patented SM2M+ sleep mode makes power consumption negligible in between recordings. Other means to lengthen deployment include Recording Compression or Adaptive Triggering, where the recordings are triggered by crossing a set sound level threshold.

Wildlife Acoustics on the cover of International Ocean Systems magazine!

Wildlife Acoustics on the cover of International Ocean Systems magazine!

We are proud to announce that we are being featured in the latest issue of International Ocean Systems magazine.

The piece highlights the hallmarks of our revolutionary SM2M Submersible and SM2+ bioacoustics recording systems.

The SM2M+ Submersible recorder is cleverly designed in that the device can monitor the sounds of multiple species clicks, songs and/or echolocations at once; from infrasonic to ultrasonic as well as up to extreme sound pressure levels.

Wildlife Acoustics is proud to support wildlife conservation efforts

Merlin Tuttle's Bat Conservation Bat Conservation International Bat Conservation Trust Wildlife Habitat Counsil