Wildlife Acoustics Blog

Whales

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.

How airplanes are saving the whales

How airplanes are saving the whales

Since 1999, California has been protecting its marine life by providing underwater sanctuaries to preserve and reestablish increasingly threatened marine life. The network of sanctuaries is one of the world's largest and stretches all along the California coast. Everything in the protected areas is regulated; from recreation to research.

Lighthawk volunteer pilots fly airplanes above the waters, conducting aerial surveys of the habitats. Twice a month, the pilots follow whales and dolphins and monitor boat traffic. By collecting data on the geographic locations of the creatures, they are able to advise ships to change course and avoid collisions. They can then report their data to California’s Department of Fish and Wildlife and help them establish the whales’ geographic distribution. The same observers are getting the bigger picture on the kelp reforestation in the area. Their work has become a vital element in the restoration of the marine ecosystem in the Pacific Ocean, from its gigantic mammals to its plants.

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 Orginization for Bat Conservation Bat Conservation International Bat Conservation Trust Wildlife Habitat Counsil