Ocean Analysis : Ocean Dead Zones

Decent Essays
Ocean Dead Zones One of the largest problems the earth is currently facing, in regards to the ocean environment, is the growth of ocean dead zones. The ocean covers more than two-thirds of the earth’s surface. Dead zones occur all around the world, but an increase can be seen near heavy agricultural and industrial areas (What Causes Ocean "Dead Zones"?, 2012). In 1960 there were 49 known ocean dead zones, now there are 405 dead zones identified worldwide (What Causes Ocean "Dead Zones"? 2012). The dead zones lack oxygen levels during certain times of the year limiting the aquatic animal life in the ocean. This problem isn’t caused by the activity in the ocean, but is caused by the activity on land. Ocean dead zones are forming due to the changes in the climate and the amount of runoffs draining into an ocean. Dead zones are areas of low oxygen levels that are insufficient with animal needs causing them to die. The largest worldwide is the Baltic Sea (Zielinski, S. 2014). Unlike other dead zones occurring in different seasons, this area has a dead zone all year around . (Wurzbacher, 2011). The next largest is in the Gulf of Mexico. This area forms mostly along the East Coast, Gulf of Mexico, and the Great Lakes, but there is no part of the Earth that is protected (“What is a dead zone?” 2014). Looking back to the mid 1900’s, there were a few oil spills that happened. In 1968 the largest oil spill was then the Mandoil II spilled approximately 300,000
Get Access