Fact about the sea

Fact about the sea

The Sea: An Introduction

Oceans are a large part of the Earth hydrosphere, which is filled with seawater. Seas are smaller than oceans and are often partially surrounded by land. It is a part of the Earth important ecosystems and has great geological, meteorological, and economic importance.

Characteristics of the sea:

Size and Depth:

Seas are generally smaller than oceans.

The average depth may be less than the ocean, but some oceans may have greater depth.

Limits and Locations:

Oceans are usually located close to land and are often limited by coasts or islands.

Attributes of watercourses:

Sea water is salty and contains various minerals dissolved in it.

Salinity levels vary from ocean to ocean.

Substrate Variation:

Sand, gravel, rock, and sometimes coral reefs are found on the ocean floor.

Major oceans of the world:

Arabian Sea:

Part of the Indian Ocean.

It is bordered by India, Pakistan, Iran and Oman.

Bay of Bengal:

The world largest ocean.

It is located along the east coast of India, Bangladesh, and the west coast of Myanmar.

South China Sea:

It is part of the Pacific Ocean.

Important to various countries in Southeast Asia.

Andaman Sea:

Part of the Bay of Bengal and located between Thailand, Myanmar and the Andaman Islands.

Mediterranean Sea:

Located between Europe, Asia and Africa.

It is an important trade route.

Black Sea:

It is located between Eastern Europe and Western Asia.

Importance of ocean:

Economic Aspects:

Fishing: Ocean is the main source of fishing and seafood collection.

Trade: Transporting goods by sea is easier and cheaper.

Natural Resources: Oil, natural gas, and various minerals are available.

Environmental Aspects:

Biodiversity: Oceans are home to various species of marine animals and plants.

Climate regulation: Oceans maintain the Earth temperature and climate balance.

Tourism and Recreation:

Sea tourism is a big part of the industry.

Ocean beaches, snorkeling, scuba diving and other marine sports are popular.

Military Strategy:

The navies of various countries consider the sea important to maintain their maritime power.

Marine Ecosystem:

The ocean is known for a variety of biodiversity, including:

Fish: Tuna, shark, salmon.

Marine mammals: whales, dolphins, seals.

Coral reefs: One of the world largest marine ecosystems.

Turtles and seabirds.

Challenges affecting the ocean:

Pollution:

Plastic waste, oil spills and chemical pollution threaten marine ecosystems.

Overfishing:

Overfishing is reducing the number of marine animals.

Climate Change:

Rising sea temperatures are destroying coral reefs and disrupting marine life.

Rise in water level:

Melting ice is causing sea levels to rise, threatening coastal areas.

Interesting facts about the ocean:

About 71% of the Earth is covered by oceans and seas.

Marine plants (phytoplankton) produce about 50-80% of Earth total oxygen.

The deepest place in the world is called the Mariana Trench, which is part of the Pacific Ocean. It is about 11,034 meters (36,201 ft) deep.