Bluesonde

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Bluesonde Technologies is rethinking how water-quality data is gathered and maintained. Water steward organizations need continuous, precise data on marine and freshwater ecosystems for accurate condition assessments. For years, the work has been limited by equipment that’s hard to deploy and even harder to service. Bluesonde’s solution is a compact, smart buoy that can be dropped into the water quickly. Once deployed, it keeps performing even when conditions get challenging. 

The team recognized how difficult continuous monitoring can be and saw an opportunity to build tools that better support the needs of marine researchers, port and infrastructure operators, and coastal communities. Bluesonde focused on simplicity, durability, and accessibility. Their patent-pending anti-fouling technology extends maintenance intervals, lowering service demands and cost. 

The buoys monitor water-quality data like temperature, oxygen, and turbidity and can stay in the water far longer than traditional systems. Older equipment is typically larger and harder to maintain, while Bluesonde’s smaller design makes it easier to deploy several units where they’re needed, allowing teams to cover more of a site without adding extra work.

To move from concept to working product, the team needed early resources. MTI’s Business Innovation Grants and TAP support helped Bluesonde assess markets, focus on those ready for adoption, and advance product development. 2025 funding supported the first functional prototype, followed by eight MVP units placed with partners across Maine. These trials proved the system’s reliability and gave the team confidence to move toward production.

The impact is already visible. Field partners in organizations ranging from a university marine center to an oyster farm have praised the buoy’s ease of use. Several organizations are planning for 2026 deployments following the successful trials. By lowering the barrier to continuous monitoring, Bluesonde is expanding who can collect water-quality data and how often, strengthening environmental stewardship across the region.

Looking ahead, Bluesonde plans to expand its ocean-tech product line and continue building a Maine-based team. Many talented Mainers leave for technical careers, and the founders want to create opportunities that bring them back to a growing blue-tech industry. Their ultimate vision is to make continuous, high-quality water monitoring accessible to far more researchers, operators, and coastal communities.