What Are the Causes of Over Harvesting Fisheries?

••• Görkem Kara/iStock/GettyImages

There are a number of different threats to biodiversity in the world's oceans, but overfishing has become a significant problem that is threatening to wipe out entire populations of popular fish. There are several causes of over harvesting fisheries; understanding why people over harvest certain areas is the first step to reversing the trend.


Due to the amount of money that can be made catching and selling certain types of fish as seafood and sushi around the world, more and more fisherman are hitting the ocean to make their daily livings off of what they catch. Unfortunately, many companies who fund and hire fleets of fishing boats are primarily concerned with making money and beating their competition without regard for the environment or future fish populations.

Lack of Government Regulation

Governments regulate how many fish fisherman can catch in some areas of the world, but they are behind in many developing countries. Fisherman in unregulated areas often use methods that net huge quantities of fish from the area, but destroy the ecosystem. Fishing methods like blast fishing, gill nets and certain other fish traps destroy other organisms that larger species feed on.


Over the past 100 years, nautical and industrial fishing technology has made leaps and bounds, allowing fisherman to know the migrating patterns of fish, track them underwater by radar and create nets and traps. Some in the fishing industry abuse these technological advancements to make their jobs easier and more lucrative. Unfortunately, restricting this abuse through laws and enforcement is challenging on the open oceans of the world.

Related Articles

Effect of Human Activities on the Environment
The Destruction of the Marine Ecosystem
How to Reduce the Use of Natural Resources
Persuasive Speech Topics on Water
Advantages and Disadvantages of Afforestation
How Bitcoin Is Polluting the Planet
How Drones are Playing a Role in Wildlife Conservation
Is Hydropower a Non-Renewable or Renewable Resource?
The Impact of Natural Disasters
Everything You Need to Know About the Contagion That's...
What Are the Causes of the Destruction of Ecosystem?
How to Calculate Percentage Reduction
Children's Information on Endangered Animals
How to Conserve Plants and Animals
Ways to Maintain Ecological Balance
Objectives of Fish Farming
How Does Hunting Affect the Environment?
The Effects of Water Pollution on Plants & Animals
Positive Effects of Floods
What Is the Human Impact on the Freshwater Biome?