Sea Bindweed
Calystegia soldanella

Sea Bindweed is a low, creeping plant of sand dunes and occasionally shingle, which differs from the similar (climbing) Field Bindweed in its pink flowers with 5 radiating white stripes which run to the edge of the flower, and its kidney-shaped fleshy leaves (Field Bindweed leaves are arrow-shaped). The flowers are up to 2 inches across and can be seen from June to August.