#1 Late 60's, early 70's novel about British man living on Caribbean island with 2 younger female wards. They can breath underwater and communicate with dolphins. Story involves trip to London w/ girls' kidnapping, at sea tidal wave and pirates taking over island. Human apocalypse. Cover shows man riding back of dolphin in foreground and girls on others behind.
#2 Older-possibly British. Not sure if novel or short story. End of world approaching. Many gather to build escape rocket with lottery to man ship. Ship uses books to insulate hull. Ship may have been horizontal ski jump launch.
