Grey seal acoustics
Specialist review of underwater vocalisations and call-type structure.
Marine Bioacoustics • Environmental Intelligence
Halicho Marine
Turning underwater sound into ecological evidence.
What we do
Specialist grey seal bioacoustics for environmental decision-making.
Halicho Marine supports offshore renewables, monitoring programmes and research by interpreting underwater acoustic recordings.
Acoustic datasets are reviewed, classified, analysed and reported with scientific care, so results can be used with confidence in project decisions.
PAM analysis
Support for passive acoustic monitoring datasets and reporting.
Expert verification
Review of candidate detections, labels and acoustic evidence.
Environmental context
Analysis of temporal, tidal and acoustic conditions around vocal activity.
Evidence-led interpretation
The output is more than a list of detections.
The deliverable is interpreted evidence that can support environmental assessment, monitoring design and consenting decisions.
Approach
From recordings to reportable evidence.
A clear workflow helps clients understand how acoustic recordings become interpretable ecological outputs.
Machine learning and signal processing can accelerate review, but expert ecological interpretation remains central.
1
Recordings
Hydrophone datasets from field deployments or monitoring systems.
2
Screening
Candidate acoustic events identified using appropriate tools and workflows.
3
Verification
Spectrogram and audio review separates true calls from noise and ambiguity.
4
Classification
Calls are classified, summarised and analysed across the dataset.
5
Interpretation
Results are reported with context, caveats and relevance to project questions.
Spectrogram review
Visualising acoustic structure supports careful verification and classification.
Call morphology
Short acoustic examples help communicate the patterns behind repertoire analysis.
Machine learning can accelerate review. Ecological expertise determines what the results mean.