Experimental demonstration of a trophic cascade in the Galápagos rocky subtidal: Effects of consumer identity and behavior - Fig 1 WitmanJon D. SmithFranz NovakMark 2017 <p>(<b>A</b>) <b>Green (<i>Lytechinus semituberculatus</i>) and pencil (<i>Eucidaris galapagensis</i>) sea urchins on the exposed rocky substrate, 8 m depth, Galápagos Islands and (B</b>) <b>close-up of a patch of substrate on the bases grazed by pencil urchins in the TC experiment.</b> Pink areas are crustose coralline algae which is consumed by both species. Orange organisms are an ahermatypic coral <i>Tubastrea</i> sp. Scale bar in (<b>B</b>) is 2.0 cm. The grazed area is a light-colored crescent shaped patch approximately 2.0–3.0 cm wide extending across the upper half of the photograph. These areas were measured as a percent of the substrate grazed by sea urchins in the TC experiments. Also shown are crustose coralline algae (pink), fleshy encrusting algae <i>Hildenbrandia</i> sp. (brown), green algal turf, and diatoms (light brown).</p>