I had already stayed somewhat late over my explorations; the current was freshening with the change of the tide, and Sandag Bay was no longer a safe place for a single swimmer.
Well, just at the last moment there came a sudden flush of current, dredging through the tangles like a wave.

I lost one hold, was flung sprawling on my side, and, instinctively grasping for a fresh support, my fingers closed on something hard and cold.

I think I knew at that moment what it was.

At least I instantly left hold of the tangle, leaped for the surface, and clambered out next moment on the friendly rocks with the bone of a man's leg in my grasp.
Mankind is a material creature, slow to think and dull to perceive connections.

The grave, the wreck of the brig, and the rusty shoe-buckle were surely plain advertisements.