Look for plants such as sea pink, moss campion, scurvy grass, sea mayweed and lichens on the rocky foreshore.
A number of insect species feed on scentless mayweed.
Mayweed (Matricaria) - Weeds, excepting the double variety of M. inodora, which is a pretty plant with feathery foliage somewhat like Fennel, and with large white flowers, perfectly double.