Hawaii's intertidal zone is home to a variety of plants and animals that are well suited to the push and pull of tides. When the tide is low, rocks are exposed to the hot sun. Shellfish hug the rocks to keep moisture in. Some snails even have an operculum, a "door" that closes shut to prevent them from drying out. When the tide is high, rocks are submerged and fish, mollusks and other creatures emerge from crevices and hiding spots under rocks, free to roam. Some animals even prefer the spray zone, where waves constantly pound the shore.
Plants and animals living in the intertidal zone must also adapt to drastic changes in temperature and the level of salt in the tide pools.
Tide pools can be fun, but you must use caution when exploring. Always wear protective foot covering. Rocks can be slippery, so watch your step. Beware of animals, like urchins, that can be venomous. Avoid stepping on and destroying plants and coral. If you overturn a rock, replace it the way you found it so that the plants and animals beneath the rocks aren't exposed to sunlight and drying out. And NEVER turn your back to the waves! Always be mindful of the sea and all its creatures.
Print and color this identification sheet of Hawaii's rocky shore: