Cockle shells

Today marks the twentieth anniversary of the Morecambe Bay cockling deaths where 23 Chinese men and women died having been caught out by the tides. I've not seen anything on the national news, apart from a very brief mention on 'This Day in History' on the radio this morning, but there has been some commemoration locally and some reporting on regional BBC news. A search through blip shows that Dad and I visited the memorial (somewhat hidden away in a field overlooking the Bay) ten years ago now. Lemn Sissay's words (chalked, perhaps painted?) on the sea wall as part of the commemoration are apt, I think: 
The moon laughs, the clouds cry
and a seagull screams at the night's sky, 
and the sad sea sighs - goodbye.