If you stand on the beach on Holyhead
and listen attentively,
you may hear, above the sound of surf,
an unearthly harmony.
Upon a tiny rocky islet
out of sight of land
the world’s one and only seal voice choir
are sprawled on a patch of sand;
and sometimes, when the waves are still
and the breeze is off the sea
you can pick out a snatch of Cwm Rhondda
or perhaps Abide With Me.