Some tide pool animals hide under plants in the tide pool to find shelter from the sun. How many different species can you spot in this. Temperature: As the tide goes out, tide pools and shallow areas in the intertidal become more vulnerable to temperature changes that could occur from increased sunlight or colder weather. Anemones, sea stars, seaweeds, algae, limpets, chitons, barnacles, and sponges are all tidepool creatures.Salinity: Depending on rainfall, the water in the intertidal zone may be more or less salty, and tide pool organisms must adapt to increases or decreases in salt throughout the day.Kelp, a type of algae, has a root-like structure called a holdfast that it uses to attach to rocks or mussels, thus keeping it in place. Waves: In some areas, waves hit the intertidal zone with force and marine animals and plants must be able to protect themselves.Sea snails such as periwinkles have a trap door called an operculum that they can close when they are out of the water to keep moisture in. Organisms in this habitat must be able to adapt if they are left “high and dry” when the tide goes out. Several different marine habitats are present in shallow waters. These plants provide the vital first step in the marine food chain. This is the depth to which sunlight can penetrate, and therefore where marine plants are found. Depending on the time of day, different areas of the intertidal zone may be wet or dry. Low tide zone organisms include abalone, anemones, brown seaweed, chitons, crabs, green algae, hydroids, isopods, limpets, mussels, and sometimes even small vertebrates such as fish. The majority of marine life is found in the first 200 meters of water.
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