As we approached Elberry Cove in Paignton, the sun miraculously came out, illuminating the sparkling emerald water. I had wanted to show the children the eel grass, by swimming out over it, but unfortunately the visibility was hopeless in the middle of the bay, where the grass is found, because of the rain and the recent Easterlies. So we swam close in around the rocks towards Broadsands instead, where the water was clearer, and saw lots of wrasse and sand eels. Then, as we stood drying ourselves on the beach afterwards, we saw shoals of fish breaking the smooth surface of the water, like sudden pulses of electricity. I assume these fish were mackerel, but does anyone know why they break the surface from time to time?