small whitish-pink flowers

small whitish-pink flowers

Observation - small whitish-pink flowers. Description: A small 4-petal flower on low growing red stems. There are a few heart-shaped leaves which may be part of this, but nearer the flowers are longish ones with a slight tooth. The petals make a sort of box shape. On rocks just above high tide level. Th

A small 4-petal flower on low growing red stems. There are a few heart-shaped leaves which may be part of this, but nearer the flowers are longish ones with a slight tooth. The petals make a sort of box shape. On rocks just above high tide level.
The red-purple stems confuse me.