Back to: Seed Production Pathways to Scale

The first step in this journey is to find a reliable source of seawater. You have two primary options: an existing intake pipe or open waters.

Depending on your nursery location, trucking in seawater and storing it is also possible.  However, when choosing a collection site, it’s essential to avoid locations where freshwater mixes with seawater, as this can affect the water’s salinity levels. Aim for a target salinity of around 30 parts per million (ppm). Additionally, steer clear of areas near heavy industrial discharges or human development due to contamination concerns.

GreenWave Tip

For the best water quality, collect seawater during a rising tide to minimize turbidity levels, which will reduce the need for extensive filtration. If your intake site is near a significant source of fresh water like a river, salinity needs to be checked after rain events. 

If you don’t have access to an existing intake pipe, a gas powered suction pump can come to your rescue. Look for a seawall or other bulkhead near deep water to ensure clarity.  Use a rigid suction hose for the pump’s intake side and a flexible hose can for the discharge side. Before first use, flush it with saltwater for several hours to remove any manufacturing residues. If you are sourcing directly from the ocean it’s important to use some sort of intake filter or screen to avoid larger organisms from being sucked up.