A Multi-Purpose Measurement
Monitoring these sounds helps scientists assess human impact, enforce environmental regulations, and develop quieter technologies to minimize harm. Additionally, underwater acoustics enable groundbreaking research, from tracking marine migrations to studying deep-sea earthquakes. As ocean noise pollution grows, advanced Passive Acoustic Monitoring (PAM) systems—powered by AI and real-time data—provide essential insights to safeguard marine life, improve industry practices, and secure coastal waters, making them indispensable for a healthier, safer, and more sustainable ocean future. Unlike active sonar, which emits sound waves, PAM systems detect and analyze natural noises, making it an invaluable tool for research, defense, and conservation. RTsys, a French leader in underwater acoustics with more than 15 years of experience in the field, offers an extensive range of advanced PAM solutions designed for diverse applications.

A Suite of Options
RESEA and SYLENCE-LP are autonomous underwater recorders built for long-term monitoring, ideal for marine biology and environmental protection. These compact and lightweight devices capture high-quality audio for weeks or even months, with long battery life and high storage capacity, ensuring researchers and operators can gather extensive data without frequent maintenance.
For real-time monitoring, REMHY, RUBHY, and RUBHYAI buoys stand out as an innovative solutions with RTsys’ powerful embedded software able to process acoustic recordings using AI to automatically calculate emitted noise to validate compliance with regulations, detect and classify marine mammals, and generate detailed reports, significantly reducing manual analysis time. The buoys include tools to stream processed data in real time via UHF, Wifi, or satellite, making it perfect for offshore wind farm construction monitoring, scientific research, and protected areas surveillance, where immediate insights are crucial. RTsys also developed a dedicated web platform, RESONANCE, allowing users to monitor their data from the shore. Solar panels are also available for permanent use at sea and long-term observations.

What sets RTsys apart is its combination of cutting-edge technology, ease of use, and durability, ensuring reliable performance even in harsh marine conditions. By turning underwater sound into actionable data, RTsys PAM systems help to protect marine life, enforce security, and advance scientific discovery—all while preserving the ocean’s natural balance. RTsys solutions are currently being used worldwide in the most demanding environments. Whether tracking blue whales, monitoring underwater construction, or safeguarding coastal waters, these tools provide the ears we need beneath the sea, ensuring a quieter, safer, and smarter future for our oceans.
This spotlight was featured in the 2025-2026 Marine Instruments Buyers’ Guide, read more here.