Compare the aquatic species mortality on the east and west coast

The mortality rate among the aquatic species on the east coast is more than that on the west coast.

Explanation:

Owing to the higher extent of economic activities carried out from the east coast compared to the west coast, the lives of the aquatic species on the east coast are more vulnerable. The Atlantic Ocean, the east coast and the adjacent sea are recognized as the busiest in the world. Such disturbance caused by continuous human activities is less on the west coast. Thus there are less unnatural aquatic species deaths there.