National Geographic : 1952 Feb
© National Geographic Society + A Red-clawed Rock Crab Pauses over a Sponge-but Not to Wash Because of its nimbleness, the rock crab is called "Sally Lightfoot." Great diversity marks the clan of the crabs, which range down to microscopic size. Some are blue, yellow, red, green. Some have enormous claws; others, delicate pincers. Kodachromes by Paul A. Zahl + In a Patch of Sargassum Weed Lives a Camouflaged 5-inch Sargassum Fish With forefins that actually clasp like fingers, the fish climbs among branches of floating weed, stalking prey with the skill of a jungle cat. Cannibalistic, one sar gassum fish (Histrio) will eat another, even engulfing one larger than itself.