We are a world-leading marine technology company specialising in underwater acoustics. Our systems enable clients to comply with environmental regulations to protect marine life from the effects of sound in water. We provide expertise in Mitigation, Measurement and Modelling.

PrintStarted in 1996 to undertake underwater acoustics research projects, the company was involved in the early stages of Passive Acoustic Monitoring (PAM) development and is now the market leader in its field.

Seiche has a global reach via its offices in the UK, USA, Scandinavia and South Africa, and also maintains strong partnerships with industry, academics, and government agencies around the world.

In the recent Sunday Times Tech Track 100 Index, Seiche was placed as Number 1 manufacturer in the South West and Number 2 in the UK as a whole.

We are committed to supporting all our equipment in the field and provide 24/7 rapid response to all on-site queries.



The new MicroPAM is a full PAM monitoring and mitigation system in small, highly portable package. It is IP67-rated and designed for use in tough, marine environments. Featuring interchangeable hydrophone cables in single or multi-sensor arrays it may be used as an autonomous sound recorder, or linked to a laptop computer for real-time monitoring.   […]


We are taking bookings for our MMO (10-11 Sept) & our PAM course 12-14 Sept. If you are interested, give us a shout… https://t.co/9dAZzeShQz
RT @RS_Aqua: Our single channel underwater noise Porpoise Recorder is Product of the Month in Marine Technology Reporter! @MarineTechno #ac

6 x Hydrophone Array

Seiche has been putting its recently developed 6xHydrophone Array into active service as part of a package with 3×120°TI/HD Camera Systems, plus PAM and Camera Operators. Our latest project commenced at the end of 2017 and ran for period of six months. Contracted by AIS, and working for Fugro, we undertook a Geophysical/Geotechnical survey utilising […]

Middelfart Listening Station

Middelfart is a marine protected area containing a high density of harbour porpoises. Seiche is working in partnership with Aarhus University and Naturpark Lillebaelt to provide real-time monitoring of porpoise activity and levels of ambient sound. The aim of the Listening Station is to help gain an understanding of why this area is important for […]

Digital Thin Line Array

Seiche’s Digital Thin Line Array is a high-performance, low-noise acoustic array that provides highly sensitive passive acoustic monitoring. The array measures just 20 mm in diameter and houses 8 digital hydrophone sensors, but can be configure for up to 32. The topside electronics are contained within a compact, robust housing. Each hydrophone sensor incorporates a […]