The beach has pebbles of many interesting shapes and colours. Its impossible to walk along the shore without picking up a few curiosities! There are not many shells; a few little green sea urchins and some battered oyster shells. Just occasionally I find a gorgeous ormer! This is a type of abalone, with seven holes down one side, and a pearly iridescent lining. The question is; why do bi-valves have such showy linings? When the creature is alive the lining would never be seen, so what is their survival value?Tuesday, 24 November 2009
Collecting salt off the rocks
The beach has pebbles of many interesting shapes and colours. Its impossible to walk along the shore without picking up a few curiosities! There are not many shells; a few little green sea urchins and some battered oyster shells. Just occasionally I find a gorgeous ormer! This is a type of abalone, with seven holes down one side, and a pearly iridescent lining. The question is; why do bi-valves have such showy linings? When the creature is alive the lining would never be seen, so what is their survival value?
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