They have a mouth on the bottom of them. As they move along they eat algae & other detritus off the surface of rocks, coral etc. They have surprisingly strong mouth parts that chew out trails as they go.
sea urchins eat kelp.
No. Sea urchins are primary consumers and only eat sea weed, algae and kelp.
Sea Urchins
Sea Otters find sea urchins on the ocean floor and break it open with a rock. It will then eat everything except the spines (the insides).
Green Sea Urchins eat plankton, algae, small fish, mussels, sponges, and brittle stars.
Yes
sea urchins
sea urchins
Sea otters are secondary consumers. This because sea urchins are primary and sea otters eat sea urchins.
Yes they smash them on their chest with stones and eat the insides, which is also eaten by humans. If you ever eat Uni at a Sushi restaurant that is sea urchin
Sea urchins mainly eat algae and coral. However, they also are known to sometimes feed on decomposing matter such as dead fish.
There are several animals that eat sea urchins. Sea otters, sunflower stars, snails, crabs and some species of fish predate upon sea urchins.