The Sea Raiders

 The coast was in panic. People disappearing off the night time beaches, fishing boats lost at sea. Even the boats operated by members of the Church of Dagon stayed in port... amid rumours of something evil in the shallows...

At Seaport, the army patrolled the coast...

Patrols peering towards the sea for clues or dangers...

Patrolling the beach and scrub-covered rocks.

Checking the shoreline...

A strange noise... 'Bill... no reply. Bill had vanished into the dark night.

Calls for help, attracting the rest of the soldiers.

Then silence as the soldiers reach the rocks...

Something there...hidden in the dark and the rocks...

Sounds of shouting and gunshots, a frantic slashing of bayonets at the unseen foe...

Then the unseen enemy is gone, back to the darkness of the sea.

'Over the following weeks there were further attacks down the coast. On the last day of June, Mr Egbert Caine, an artist, bathing near Newlyn, threw up his arms, shrieked and was drawn under. A friend bathing with him made no attempt to save him but swam at once for the shore. This is the last fact to tell of this extraordinary raid from the deeper sea. Whether it really is the last of these horrible creatures it is, as yet, premature to say.  But it is believed, and certainly it is to be hoped, that they have returned now, and returned for good, to the sunless depths of the middle seas, out of which they have so strangely and so ysteriously arisen.'

Not everything I do is inspired by Lovecraft... there have been quite a few others... And if this one is not familiar the clues are there!