Skip to main content

Marine Biomes

  • Author:
  • Updated date:

The largest biome on the face of the earth is the Marine Biome. It is a fuel tank for the whole of earth. The tank is filled with water that gives life to the whole of the earth. It is made up of Arctic and Antarctic Ocean. The Indian Ocean and the Pacific and Atlantic Oceans make the other half of the Biome.

While other gulfs and bays make up the rest of the Biome. Now, it’s a common fact that the Marine Biome constitutes of seventy percent of the face of the planet, however, a fact that most people forget or neglect is that the marine biome holds eighty percent of the live species that we know of. That means that the biggest habitat n the world is that living in the marine biome.

Marine biome also consists of various wonders that are awe inspiring. The depth of the Marianas Trench that is 36200 feet represents the lowest point of the Marine Biome. This depth is in fact, bigger in length then the height of the tallest Mountain: Mount Everest.

The marine biome is made up of different types of aquatic zones: the estuaries, coral reefs and the gigantic oceans that represent the most colossal sight of the ecosystems on earth. It is the water of the ocean that evaporates and falls back on the earth as rain.


Parts Of The Marine Biome

The places of the Marine Biome are properly categorized and systematized into various zones. These make up the systems of this Biome like various systems make a human body.

The Inter-Tidal Area

This is the part of the biome that usually every one of us has seen and which is usually well known. It is the bays and sea views that many of us visit for recreation and vacation.

This is the area where the ocean is linked with the land and it is known as the inter-tidal zone.

This area is also known as the coastal area and it is in a constant flux of change due to the rapid rise and fall of the tide.


When this area borders the continents and islands it is also known as the coral reef. Coral Reefs are beautiful place which are usually an excellent choice for Scuba Divers and vacationers. They are made up of ‘Coral’, a unique organism made up of algae and various animal tissues.

They live lives like plants as well as animals. This is because they make their own food as well as catch passing by micro-organisms with their tentacles. Several other intriguing creatures are found in the reefs: Octopus, Starfish, and mollusk.

The Longsnout Seahorse

The Longsnout Seahorse

The lion-fish

The lion-fish

Benthic and Pelagic Area

Moving away from the coastal region, the mesmerizing depth of the ocean expanse is known as the Benthic Zone.

This is a very cold region as almost no sunlight reaches here. It also consists of slow decomposing organisms like silt.

Scroll to Continue

Further, as no sunlight reaches here, there is very minute amount of plant life.

Further, the animals found here are those which dwell and thrive on the bottom of water like anemone, sponge and starfish.

As one goes higher and higher towards the surface of the open ocean, one leaves the benthic area and comes to the Pelagic area.

A multitude of marine animals live here including the mighty whales and ferocious sharks. Plankton and seaweed are found here as well.

The Eastern Newt

The Eastern Newt

The Abyssal Area

If ever there were an underworld in this world, in its truest sense, this is it. The deepest point of the marine biome is known as the Abyssal Zone. Home to a variety of curious, peculiar and indigenous creatures, it is the place located 2000 meters or more deep in the ocean.

Interesting invertebrates are found here, such as the Coelacanth: a prehistoric fish presumed to be extinct but found a few decades ago in the Indian Ocean. There are a few other fish in this part as well and they are also known as glowing fish. This happens through a process known as photoluminescence.

Coral Sol (or sun coral)

Coral Sol (or sun coral)


Further, the abyssal zone is a high pressure area and is totally devoid of any sunlight. It is the coldest part of the ocean. It is here that vents are found which release minerals like hydrogen sulfide.

These vents are formed by the phenomenon of the spreading tectonic plates. The minerals released by these vents are what the bacteria thrive upon. Bacteria are eaten up by other micro organisms which are in turn eaten by the fish.

And then the fish are eaten by bigger fish and humans and other animals as well. So in this way, the abyssal area is the source of a unique predator - prey relationship as well.

Marine Ecosystem

If Your Are a Nature Lover You Also Would Want To See These

  • Famous National Parks
    Nature has blessed us with so many beautiful things and breathtaking sites. The whole Earth is filled with such diverse animal and plant life that till now, man hasn't completely figured out.
  • Blue Mountains
    Blue Mountains is one of the greatest tourist attraction which attracts so many visitors from around the world to visit and feel the majestic beauty of this natural mountainous region.
  • Grassland Ecosystem
    A biome is a huge, unique complex of plant communities made and asserted by climate. A huge number of climatic factors relate in the maintenance and creation of a biome.
  • Famous Mountains
    Nature is full of beauty, there are countless things around the world which remind us about the beauty of the world we live in.
  • The Rainforest Biome
    Biomes are outlined as the world's leading communities, categorized according to the prevailing vegetation and defined by adjustments of organisms to that specific environment.


desiree on October 24, 2011:

you should put more about island marine biomes because im working on a project and it has to be marine island not just marine :)

evelyn on January 27, 2011:


agusfanani from Indonesia on March 01, 2010:

A cool hub with beautiful pictures.

Related Articles