Essential and Endangered: Transportation

When the tide goes out, depressions in the rocky shore capture and hold water, creating tide pools.

• More HSW Videos
• 

Behind the splash zone is the intertidal zone, which ranges from where the ocean water reaches at high tide to where it meets the shoreline at low tide.

• More HSW Videos
• 

Shipping, trade, commerce, and travel are transportation demands of the river.

• More HSW Videos
• 

The ecotone characterized by the meeting of a river and the ocean is called an estuary.

• More HSW Videos
• 

The richest, deepest soils of the Holyoke Range are found by the riverside. To thrive here, plants must be able to withstand frequent flooding.

• More HSW Videos
• 

Lines of longitude run vertically down the globe.

• More HSW Videos
• 

Lines of latitude run horizontally around a globe to make finding a specific location easier.

• More HSW Videos
• 

All globes possess a compass rose, which points to the cardinal directions.

• More HSW Videos
•