Shares the Knowledge !

Life under Water

There are lots of interesting things living in the sea. They are:

  • Fish
  • Shell-Fish
  • Whales
  • Dolphins
  • Seals
  • Sea Birds
  • Plants
  • Other Sea Creatures like JellyFish, Sea Horse, etc


The fish family includes a wide variety of vertebrate animals that live in the water. Although there are over 31,500 different types of fish, with many diverse characteristics, the one thing that fish have in common is that they breathe oxygen from the water through gills. Fins are also a common characteristic of fish, although not all fish have fins. A fish uses fins to propel itself through the water. Some fish can swim at very fast speeds through the water.

Fish vary in size from the go by fish at less than one inch, to the whale shark at over 50 feet. Most fish are cold blooded, meaning their body temperature is not internally regulated. Their body temperature fluctuates with the changing temperature of the water surrounding them. Unlike humans, who have skin covering their body, most fish have scales covering their body.

Fish are an important source of food for humans. For this reason, humans are becoming quite concerned about polluting the ocean, and the effect that ocean pollution is having on fish.

The are lots of types of fish that live in the sea. Different types of fish live in different parts of the ocean. Some live close to coral reefs. Some live near the surface. Some even live in the deep waters close to the bottom of the ocean. Fish eat a variety of things, from plants, plankton (small living organisms), to even other fish.


There are many species of sharks in the ocean. Sharks are one of the better known predators in the sea. Many sharks have sharp teeth that are used to catch their food.

The most dangerous shark is the great white shark, which can grow to over 20 feet long.

Sea Ray

There are many species of rays in the ocean. Sea rays fly through the water like birds through air.

The biggest rays are the manta rays. Some mantas can grow to over 25 feet from tip to tip, and can weigh 3,000 pounds.


Most fish travel in schools for safety. When fish travel in schools, the movement of all the fishes may confuse a predator. Plus, there are more eyes to look out for danger.

Shell Fish

Shell fish include crustaceans (crabs and lobsters) and mollusks (clams and oysters). Mollusks were among the first inhabitants of the Earth.

Fossils of mollusks have been found in rocks and date back over 500 million years. These fossils are usually well-preserved because of the mollusks' hard shell.

Crabs and Lobsters

Crustaceans live mostly in the ocean or other waters. Most commonly known crustaceans are the crab, lobster and barnacle.

Crustaceans have a hard, external shell which protects their body. Crustaceans have a head and abdomen. The head has antennae which are part of their sensory system. The abdomen includes the heart, digestive system and reproductive system.

The abdomen also has appendages, such as legs, for crawling and swimming. Many crustaceans also have claws that help with crawling and eating.

Clams and Oysters

Most mollusks have a soft, skin-like organ covered with a hard outside shell. Some mollusks live on land, such as the snail and slug. Other mollusks live in water, such as the oyster, mussel, clam, squid and octopus.

Land living mollusks, like the snail, move slowly on a flat sole called a foot.

Ocean living mollusks move or swim by jet propulsion. They propel themselves by ejecting water from their body. For example, the squid ejects a jet of water from a cavity within its body, and the scallop ejects water to move by clamping its shell closed.

Other ocean living mollusks, like the oyster, attach themselves to rocks or other surfaces, and can't move. They feed by filtering small food particles from water that flows through them.

Whales and Dolphins

There are many types of whales. Some whales eat krill and plankton which are tiny, shrimp-like animals. Other whales eat fish. The sperm whale loves to eat giant squid. Killer whales eat fish, and sometimes even eat seals and other whales. The blue whale is the largest animal in the world. It can grow up to 120 ft. long, and can weigh up to 170 tons.

Since whales and dolphins are mammals, they cannot breathe under water. They must come to the surface to breathe air. They breathe through a blowhole, or nostrils, on the top of their head. Babies are born under water and must be pushed to the surface, by the mother, so that they can take a breath.

Whales and dolphins also look different from many other mammals because they don't have fur. Although, they do have a sparse covering of hair.

The circulatory and respiratory systems have adapted to living in water. Whales and dolphins can dive deep in the water on a single breath.

Whales and dolphins also have a highly developed brain. They are considered to be very intelligent.

Dolphins, and some whales, can use echolocation to find food and to identify objects around them. They make loud clicking and squeaking sounds that bounce off objects and echo back to the dolphin. This echo tells the dolphin about the nearby object.


There are about 30 species of seals. They all can be classified into two types: eared seals and true seals. Eared seals have ears that can be seen, and their flippers work well on land. True seals have tiny ears, and their flippers work better in the water.

Seals spend much of their time in water. But, they must return to the surface to breathe, just like other mammals.

A seal's respiratory system is adapted for water. A seal can go for 40 minutes without a breath. This allows them to dive to a depth of over 2,000 feet.

Seals are well designed to swim in water. Their bodies are very streamlined and their flippers propel them quickly through the water.

Seals also spend considerable time lying around on rocky islands and beaches. But they are clumsy and move slowly on land using their flippers.

Baby seals are born on land after a long, 12 month gestation period. The pups develop rapidly. Some are able to swim within a few hours of birth.

Walruses differ from seals in that they are larger and have large tusks. They can be over 10 feet long and over 3,000 pounds.

Sea Birds

Seabirds (also known as marine birds) are birds that have adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same environmental problems and feeding niches have resulted in similar adaptations. The first seabirds evolved in the Cretaceous period, and modern seabird families emerged in the Paleogene.

In general, seabirds live longer, breed later and have fewer young than other birds do, but they invest a great deal of time in their young. Most species nest in colonies, which can vary in size from a few dozen birds to millions. Many species are famous for undertaking long annual migrations, crossing the equator or circumnavigating the Earth in some cases. They feed both at the ocean's surface and below it, and even feed on each other. Seabirds can be highly pelagic, coastal, or in some cases spend a part of the year away from the sea entirely.

Like many birds, seabirds often migrate after the breeding season. Of these, the trip taken by the Arctic Tern is the farthest of any bird, crossing the equator in order to spend the Austral summer in Antarctica. Other species also undertake trans-equatorial trips, both from the north to the south, and from south to north.

The population of Elegant Terns, which nest off Baja California, splits after the breeding season with some birds travelling north to the Central Coast of California and some travelling as far south as Peru and Chile to feed in the Humboldt Current. The Sooty Shearwater undertakes an annual migration cycle that rivals that of the Arctic Tern; birds that nest in New Zealand and Chile and spend the northern summer feeding in the North Pacific off Japan, Alaska and California, an annual round trip of 40,000 statute miles (64,000 km).

Other species also migrate shorter distances away from the breeding sites, their distribution at sea determined by the availability of food. If oceanic conditions are unsuitable, seabirds will emigrate to more productive areas, sometimes permanently if the bird is young. After fledging, juvenile birds often disperse further than adults, and to different areas, so are commonly sighted far from a species' normal range.

Some species, such as the auks, do not have a concerted migration effort, but drift southwards as the winter approaches. Other species, such as some of the storm-petrels, diving petrels and cormorants, never disperse at all, staying near their breeding colonies year round.

Seabirds have had a long association with both fisheries and sailors, and both have drawn benefits and disadvantages from the relationship.

Fishermen have traditionally used seabirds as indicators of both fish shoals, underwater banks that might indicate fish stocks, and of potential landfall. In fact, the known association of seabirds with land was instrumental in allowing the Polynesians to locate tiny landmasses in the Pacific.

Seabirds have provided food for fishermen away from home, as well as bait. Famously, tethered cormorants have been used to catch fish directly. Indirectly, fisheries have also benefited from guano from colonies of seabirds acting as fertilizer for the surrounding seas.


The vast deep seas and oceans contains a huge number of sea plants which people might see and then ignore them and do not take them for granted and mostly considered as nuisance and given no respect in any way though they play an extreme important valuable role in our ecology.

Underwater sea plants provide foodstuff, foliage for other sea inhabitants and us by making a situation offering an encouraging environment for fishes, crabs, turtles and other sea organisms to build up. The microorganisms relived from sea plants are eaten by a majority of sea creatures. Plants inside ocean are in the interior of food cycle. Lacking of such plants would not supply many belongings we need.

Sea Plants don't experience the photosynthesis revolution like other land plants for the reason that of the nonexistence of daylight. Their survival entirely depends on by gripping nutrients there in the loam. The loam is very prosperous since all deceased fish, sea shells, planktons and other dead materials settles on the bottom of sea floor.

Underwater flower plants live covered in sea water of bays and along hasty wave rocky shores. These "sea plants" are extremely exclusive and are dedicated set as they include only a portion of all flower plants. In accumulation to provide rations and habitat intended for many aquatic animals, from shrimps to piranha, they boast outstanding methods of seed dispersal and pollination inside the underwater atmosphere of sludge, shifting sand and roaring waves.

Phytoplanktons are basically tiny living algae that are seen floating on the surface layers of the sea. They are seen important element in helping removing carbon dioxide and producing fresh oxygen through the process of phenomena called photosynthesis.

Scientists believe that within 2050 to 2099, we might not hold any sea plants in nearly all parts of our seas as over the last 25 years underwater sea plants have decreased in mass and quantity.

Types of Sea Plants


Seaweed Extract

Green Seaweed

Brown Seaweed

Limu Moui and Poseidonia

Telanthera Osiris



Seaweeds are also a kind of sea plants inside the seas. Seaweeds are set up caught towards rocks, sand, dead plants and algae of undersea, or is even found on the sea and ocean surfaces. Seaweeds are found large or even very tiny. They are a sort of algae. Seaweed is divided into 3 types. Those can be divided into red seaweeds, Brown Seaweed, and Green seaweed.  

The majority of seaweeds are red algae. Red algae seaweed are flexible. They revolve into many colors such as violet, red, brown, green, or even yellow color. Algae are furthermore developed within pools. A category of red seaweed algae is called "The Turkish Towel". It is known as the Turkish towel since the blades seem to resemble a towel. It always seems wet. Sea weed shade is cherry or violet having sharp blades each one of them is capable of close to 1.30metres. 

Merely 11% of green seaweed is commencing of sea waters; mostly living in the clean water habitation. Due to chlorophyll it has got its green color. A type of green algae sea weed is famous as Sea lettuce; also called as Ulva. This is palatable. Mainly used in soup and salad!

Brown seaweeds as well have chlorophyll responsible for green color. Through this color, it can range from obvious golden olive towards the darkest brown color lasting for ever! A breed of brown sea weed called as Alaria which is edible by us "the humans". Alaria is further divided into 14 sea weed types. 

Seaweed extract is chelated to get its benefits and nutritious minerals. By means of liquid seaweed extract; the skill toward chelate is able to be in use a phase extra than it would happen logically through main seaweed or seaweed meal. Chelation preserve as well be present worn, unnaturally, towards causing seaweed extract to bring further trace elements than be set up in new seaweed or in regular hydrolyzed seaweed extract.

seaveggg is a strong combination of twelve sort of complete sea plants consisting bulk amount of nutrients among a filled range of pure vitamins, mineral deposits, amino acids, antioxidants, growth hormone, and essential energy deposits. 

seaveggg too includes influential components suggested by studies that are antiviral and antibiotic. Sea plants are loaded with likely basis of minerals recognized like a detoxifier and unprejudiced foundation of nutrients. seaveggg can renovate ones wellbeing.

seaveggg is a vegetable nutritional provisions complement consisting up to twelve solid classes of intact sea plants; commencing 10,000 varieties. seaveggg plants are grown off the seashores of Ireland in collaboration through the Irish administration as well as their official scientists 

seaveggg provide with many organic compounds and is non toxic. seaveggg does not take in poisonous amount of any material. seaveggg, has turned once earths unknown and ancients plants on earth as today's most required and essential food enhancement! seaveggg uses the power of seaweeds.



Post a Comment

Upsc - Civils Preparation

Exam Strategy
Tips and Tricks
Preparation and Guidance
Optional Subjects - Preparation
Optional Subjects - Guidance
Many more >>

Bank Exams Preparation

Bank, Currency, Money, RBI,
Budget, Planning, Stock Exchange
Insurance, Taxation, International Organizations
Economic Issues, Fiscal Policy, Committee or Commissions
Many more >>

Computer Knowledge

History, Generations, Terminology
Hardware, Software, Internet
Networks, Shortcut Keys
Many more >>

Interview Preparation

General Do's and Don'ts in Interview
Entry and Dressing up
How to prepare?, Qualities judged
Many more >>