Invasive non-native species

A non-native species is any wild species that is not normally resident and not a regular visitor to Great Britain.

As well as the devastating environmental impacts, non-native species can spread disease, restrict navigation, block waterways, clog up propellers and add significantly to the management costs of our waterways. Recreational facilities can also suffer as a result of these invasive species.

As recreational boaters, there are a number of actions that we can take to minimise the risk of introducing or spreading these invasive non-native species (INNS) around Great Britain. The presence of the “killer shrimp” in some inland reservoirs highlights the potential issues that non-native species can cause for recreational boaters.

For more information and guidance on what to do if sailing your boat on different inland waters see the guidance from Non-Native Species Secretariat and RYA Wales