National Geographic : 1934 Jun
Photograph byCapt. Frank Hurley "WATCH YOUR STEP" IF YOU MUST TREAD THIS TEEMING TIDALPOOL! Naturalists wade gingerly among such rough spikes and "barbed wire" of living stone. These staghorns bristle with little coral polyps-filmy and flowerlike, but armed with tentacles, and, as rapacious as a miniature octopus, they seize and devour marine life too small for thehuman eyetosee.The bigstarfish sprawled in the crystal-clear water (right foreground) feeds on juicy mollusks, forcing open their shells with the slow, relentlesspull ofitsfivestrong, sucker-equipped arms.