" The bottom of the sea was aflame with a vast bloody glow that spread beneath the schooner; the light slid under the keel and illuminated the sails and rigging from below. It was as though we were on a boat in the Drury Lane Theatre, lighted by an invisible row of flares.

‘Phosphorescence?’ I ventured.

‘Look,’ whispered Jellewyn.

The water had become as transparent as glass. At an enormous depth, we saw great dark masses with unreal shapes: there were manors with immense towers, gigantic domes, horribly straight streets lined with frenzied houses. We appeared to be flying over a furiously busy city at an incredible height.

‘There seems to be movement,’ I said.

‘Yes.’

We could see a swarming crowd of amorphous beings engaged in some sort of feverish and infernal activity.

‘Get back!’ Jellewyn shouted, pulling me violently by the belt.

One of those beings was rising toward us with astounding speed. In less than a second its immense bulk had hidden the undersea city from us; it was as though a flood of ink had instantaneously spread around us.

The keel received a tremendous blow. In the crimson light, we saw three enormous tentacles, three times as high as the mainmast, hideously writhing in the air. A formidable face composed of black shadows and two eyes of liquid amber rose above the port side of the ship and gave us a terrifying look. "

― Jean Ray , Ghouls in My Grave