I've posted about Plough Shells before (here and here) but I can never get enough of these very interesting creatures living in the sand below the high and low tide mark. On a visit to Dana Bay near Mossel Bay in the Western Cape we found literally hundreds of them feeding on a dead jelly fish.
I always feel so sorry for these little guys when a wave pushes the water up the beach and wash them away from their meal. But they persist and turn right around, heading straight back for more.
This picture is to show the size of the jelly fish and to give you an idea how big the plough shells are.