Great bit of cover art with a golden crab image. Another public domain sealife image brought to you by Reusable Art.
It dates back to the year 1867 when it was included in the book Lightsome and the Little Golden Lady. The illustration was attributed to Charles Henry Bennett (1829-1867).
This image is copyright free and in the public domain anywhere that extends copyrights 70 years after death or at least 120 years after publication when the original illustrator is unknown.