The instrument of annihilation in this doomsday novel ["The Lord's Pink Ocean"] is no longer the Bomb but the Ecology. David Walker fancies a blight of pink algae smothering the planet Earth, save for spots in Greenland, Siberia and a few isolated hideouts.
One of these oases is a Canadian valley giving shelter to a black and a white family, imperfectly integrated, but ready to join forces against any intruder who threatens their noble savagery. This calls for the rubbing out of stray missionaries or potential world leaders who happen to stop by and it even leads to a bit of parricide. Mr. Walker is anti-technology, pro-state-of-nature and an engaging storyteller.
Martin Levin, "Fiction: 'The Lord's Pink Ocean'," in The New York Times Book Review (© 1972 by The New York Times Company; reprinted by permission), August 20, 1972, p. 26.