Stephen King's The Dark Tower: Roland Deschain.

The Dark Tower II. The Drawing of the Three.
The Prisoner.
Chapter 1. The Door. 2.

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The high-tide line was marked with drying kelp. He could see pieces of his right boot and his waterskins lying near that line. He thought it almost a miracle that the skins hadn't been washed out to sea by high-surging waves. Walking slowly, limping exquisitely, the gunslinger made his way to where they were. He picked up one of them and shook it by his ear. The other was empty. This one still had a little water left in it. Most would not have been able to tell the difference between the two, but the gunslinger knew each just as well as a mother knows which of her identical twins is which. He had been travelling with these waterskins for a long, long time. Water sloshed inside. That was good - a gift. Either the creature which had attacked him or any of the others could have torn this or the other open with one casual bite or slice of claw, but none had and the tide had spared it. Of the creature itself there was no sign, although the two of them had finished far above the tide-line. Perhaps other predators had taken it; perhaps its own kind had given it a burial at sea, as the elephaunts, giant creatures of whom he had heard in childhood stories, were reputed to bury their own dead.

He lifted the waterskin with his left elbow, drank deeply, and felt some strength come back into him. The right boot was of course ruined... but then he felt a spark of hope. The foot itself was intact - scarred but intact - and it might be possible to cut the other down to match it, to make something which would last at least awhile...