This is not an uncommon plant but unless you have already fished for aquatic plants, discovered it and identified it you won't necessarily see it in the water so it can be difficult to locate. It prefers brackish waters and the fruits (druplets) are slightly pear shaped.

It is recorded from areas around much of the coast of mainland Britain and Ireland.

Brackish pool near Bude marshes, Cornwall 19th July 2008

Added on 25th July 2008, updated 23rd January 2012