Underwater Sound Analyzer & Vessel Alert System
Only ~75 Southern Resident killer whales inhabit the Salish Sea. Vessel noise masks their echolocation clicks and pulsed calls. Use this real-time bioacoustic workstation to inspect hydrophone spectrograms, tune classification thresholds, and dispatch automated slowdown orders to mariners.
How Underwater Bioacoustics Works
Orcas use acoustic vocalizations to hunt and navigate in dark coastal waters. Pulsed calls (1–8 kHz) serve as pod identity markers, while echolocation clicks (up to 40 kHz) pinpoint Chinook salmon. Commercial ship propellers generate massive low-frequency cavitation noise (50–1000 Hz) that obscures these signals, reducing hunting efficiency by over 50%.
Real-time Vessel Slowdown Impact
Slowing commercial cargo ships from 20 knots down to 11 knots in designated critical habitats drops radiated acoustic energy by over 10 dB—halving underwater noise pollution. Real-time automated alerts give container vessels time to gently reduce speed before entering critical orca foraging corridors.
Autonomous Detection Pipelines
Modern conservation hydrophones stream audio to machine learning models that extract spectrogram Mel-frequency cepstral coefficients (MFCCs). When confidence clears tuned sensitivity thresholds, automated marine safety networks issue maritime warnings through AIS (Automatic Identification System).