So, tide pool residents must be able to cope with a highly variable environment. Organisms that live near the top of the high tide line are submersed in water only occasionally. Organisms that live near the low tide line are almost always under water. Many tidepool plants and animals attach themselves to hard, rocky outcrops and are capable of remaining anchored against the intense action of winds and waves. In general, tidepool organisms must therefore be fairly robust creatures in order to survive.
Tidal range is the distance between high and low water levels in a tide zone.
Sun, moon and Earth aligned with the Sun and Moon on opposite sides of Earth . Sun, moon and Earth aligned with the Sun and Moon on the same side. Lunar phases describe the extent to which the moon is illuminated from the perspective of Earth's surface. Its distance from Earth. The moon's tide-producing force is greater than that of the Sun.