For those who enjoyed the freak zoo parade presented in the author's The Maybe Monsters (1961), here is some more of the same. Monster is used as a general term for animals which have been seen but not identified or which have strange characteristics not yet understood. It seems that there is an astounding rate of animals being discovered every year. This is especially true of marine life, the most spectacular examples being the periodic appearances of various huge deep sea creatures which for some reason have come to the surface. And there are many unknowns involving animals which have been caught and observed: how do whales sleep, and are they ageless? how does the electric eel emit its discharges? how did bacteria sealed up for 1200 years manage to stay alive? Readers may find some of the reports more questionable than the author himself has. It's all entertaining reading, however, presented in energetic, journalistic style.