An authentic photograph shows the body of a massive octopus washed up on the coast of Indonesia. The image was generated by ...

The animals, which feed on squid and octopus, are distinguished by their bulbous heads and dark gray color. In addition to the pilot whales, boaters also spotted another unusual sight.

Award-winning author and ocean activist Mark Leiren-Young is bringing the mysterious world of octopuses to young readers in his new book, Octopus Ocean: Geniuses of the Deep.