
1.  What is tidal range?
Tidal  range is the difference of the water level between high tide and low  tide.
2.  What causes high and low tides?
High  and low tides are caused by the gravitational force of the earth and  the moon.   
3.  What causes Spring and Neap tides?
Spring  tides are caused by the sun and the moon's gravitational force  working together (when they are aligned). Neap tides are caused by  the force of the moon and the sun pulling against each other,   
 
4.  How does tidal range effect types of organisms and the shape and  size of the organism?
Many  organisms living in the ocean adapt to their environment just like  any living creature would. Tidal range could effect the organisms  that live near the reefs or shallow waters that depend on sunlight  or other sources for life. Coral it self doesn't grow vertically but  horizontally because if it grew vertically coral would be sticking  out of the ocean.  Fish that lay their eggs depend on high or low  tide. Even some sea urchins would have their spikes broken off  because the waves would be to strong, which is caused by the tide.