Low Tide Zone
The low tide zone is mainly submerged, and only exposed during the lowest tides. The organisms that live in this zone need to be underwater most of the time, and are less able to withstand being exposed to air for extended periods. Here is found an abundance of seaweed, as well as an extensive array of different species.
Colorful spiny sea urchins are echinoderms like sea stars, and similarly move about and attach themselves to a surface by the suction of their tube feet. But unlike the carnivorous sea stars, sea urchins are herbivores and feed mostly on algae.
Abalone are large gastropod mollusks, a variety of sea snail. They feed on algae, and generally remain in the same place unless food becomes scarce. The main predators of abalone are sea otters, and they are also eaten by some fish and bat rays, which dislodge them from the rocks and swallow them, shell and all.
Nudibranchs, sometimes known as sea slugs, are mollusks without shells. Some species are incredibly beautiful, with brilliant colors and delicate, feathery gills. They defend themselves by secreting a toxin, and they are carnivorous, feeding on various animals including anemones, barnacles, sponges, corals, or even other nudibranchs.