Seamus Heaney’s comment on a poem by Sylvia Plath conveys something of the shore-scouring slaps and soughs of it:

And it is indeed a pleasure to savour the dull sea-clap music of a poem like ‘Mussel Hunter at Rock Harbour’. 

Wishing you some sea-clap music. 

See also a thoughtful response by him to the same poem.  The poem can be read here.

Source: Seamus Heaney, Finders Keepers: Selected prose 1971-2001 (London: Faber and Faber, 2003), p. 221