---
title: "Explained by Offshore Sensing: eDNA sampling at sea"
description: "eDNA sampling at sea with a wind-propelled USV: persistent station visits, Iridium mission control, ~3 kn average and up to 12-month endurance to reduce crewed vessel-days and improve baselines."
---

[News](https://sailbuoy.no/news)

# [Explained by Offshore Sensing: eDNA sampling at sea](https://sailbuoy.no/news/edna-sampling-at-sea)

 Written by [Author](https://sailbuoy.no/news/author/author) | October 31, 2025

# eDNA sampling at sea

**eDNA sampling at sea** uses water samples to detect species from genetic traces. A wind-propelled Sailbuoy can persistently visit stations, collect samples, and stream mission status via **Iridium**, reducing crewed days offshore. Month-scale endurance and **~3 kn** average speed enable repeatable coverage for baselines and biodiversity studies.

## What is eDNA sampling at sea?

Environmental DNA (eDNA) is genetic material shed by organisms into the water. With autonomous routing and solar-powered electronics, a wind-propelled USV can execute repeat sampling plans, log metadata, and report progress and alerts via Iridium. Samples are recovered for lab analysis and QA.

## Why does eDNA sampling at sea matter offshore?

Consistent, low-impact sampling improves time-series quality and spatial coverage while limiting HSE exposure. Endurance up to 12 months and geofenced routes reduce mobilizations and vessel-days, helping teams maintain baselines around wind farms, MPAs, and sensitive habitats.

## **Can the USV adapt routes during a campaign?**

Yes. Operators can update waypoints and sampling cadence over Iridium, within predefined safety limits and geofences.

## **How are samples handled?**

The USV preserves samples onboard for recovery and laboratory analysis; mission logs capture timestamps, positions, and conditions.

[View full post](https://sailbuoy.no/news/edna-sampling-at-sea)

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