Strapwort (Corrigiola litoralis) is a very rare plant that only occurs on the shore of Slapton Ley. The UK is at the northern extent of its range with the current UK population is restricted to this single site.
Since 1962 it has been found at a decreasing number of sites, from being found in most areas along the shoreline to only one in 2006 with a declining number of plants present until that date. The primary reason for the decline is the loss of suitable open shoreline habitat due to the successional changes in vegetation.
Due to its declining numbers, English Nature initiated a species recovery programme for Strapwort in 1996. Germination and translocation of Slapton 'native' stock was recommended and a programme of re-introduction is halting the decline.