How skilfully Norman MacCaig sets the scene for the advent of the human intruders.

The seascape can be found in The Poems of Norman MacCaig, edited by his son Ewen (Polygon).

INTRUSION OF THE HUMAN

On the tiny sea, with an archipelago of two islands,

a breeze wanders aimlessly about,

snail-trailing over mucous water, depositing

small sighs on the sand.

A day for mermaids. A day for their inhuman eyes

and voices without vibrato. Shell mirrors

keep sinking from sight.

In the kingdom of fish whole parliaments are on the move

and guerrillas lurk

in the ruins and cellars of weed.

And in the history of light a peregrine

shoots from a sea cliff. Before its moment is over

a song will have ended, a flight

stall in a zero of the air.

An implacable scenario - till

round the skulled headland a tiny sail

loafs into view. And everything

becomes its setting. Everything shrugs together

round a blue hull and a brown sail. Everything's changed

by the human voices carelessly travelling over

the responding water, through the translated kingdoms.