Two Curious Mermaids Help a Shipwrecked Sailor

A sailor boarded his ship as usual, but several hours later, a terrible storm, the likes of which none of the crew had ever seen, wrecked the ship and tossed the man overboard. He was able to use a bit of wreckage as a raft, but quickly fainted after climbing onto it. When he woke, the sky was clear and blue, but a couple of unusual women were floating next to him, one on each side of the raft...