- Intertidal Zone – area of the marine shoreline that is exposed to air at low tide, and covered with seawater at high tide.
- Adaptations – a change or the process of change by which an organism or species becomes better suited to its environment.
- Amphipods – Flattened side-ways, and they have highly arched backs.
- Isopods – Flattened ventrally, are larger in size, and are bottom dwellers.
- Glaciers deposited the rocks.
- Animals that live in the intertidal zone have to adapt so that they can live on land and in the water.
- They have hard shells to protect them from both drying out in the sun and the pounding waves.
- Animals that live in the intertidal zone hold onto the rocks when the tide flows in and out. Snails stick to the rocks with suction. Mussels use adhesive byssal threads. Crabs clutch the rocks with their legs.