Which of the following is an herbivore in the coral food web? a.) sea urchin
b.) clown fish
c.) shark
d.) coral

The answer is Sea Urchin.

Herbivores feed only upon autotrophs. There is a large guild of herbivores in coral reef environments. Two examples are the Green Sea Turtle, which eats sea grass, and a sea urchin, which eats algae.

i believe it's a.

i'm not sure on this one, most likely correct.