National Geographic : 1926 Aug
THE NATIONAL GEOGRAPHIC MAGAZINE Copyright National Geographic Society Painting from life by William Crowder CYANEA CAP1LLATA (Top); PELAGIA CYANELLA (Middle Left); LINERGES MERCURIUS (Lower Right) Jellyfishes range in size from microscopic dimensions to several feet across the "umbrella," or disk. Cyanea, or the sun-jelly, is perhaps the largest of all ; individuals have been captured measuring seven feet in diameter and with tentacles 120 feet long. It is found along the North Atlantic coast, from Boston to the Arctic. At the lower right are thimble-fish.