Tough Exoskeletons Are Sea Shells

Seashells are a ubiquitous feature of beach however; every shell is really a natural remnant from an organism, which once lived. Many of these shell-producing species are called Sea Shells as well as mollusks are helpful for preventing their soft bodies. Now, let us have a look at sea shell systematic classification.

•Mollusks: Seashells are generally tough exoskeletons made by mollusks however; few crustaceans of arthropod phylum like crabs even produce shells.

Even if, vision is poor in many mollusks, cephalopods like squid have eyes with retinas, lenses as well as other features wonderfully like those of vertebrates. Few gastropods have best developed sense of smell and may locate food in water at a substantial distance. Predators can similarly be noticed by chemical senses as well as sometimes eliminated by leaping. Few mollusks exhibit difficult courtship behavior.

•Gastropods: These shells from snails have a spiral shell. Slugs are gastropods however have no shells.

Sometimes, hermit crabs were discarded gastropod shells for protecting their soft bodies.


•Bivalves: Polyplacophorans are a usual kind of mollusk shell made of two shells hinged together.


Bivalve creatures include oysters, scallops and mussels. These organisms have no head, relying on species and they eat passing plankton, which floats by. Shell beach in Western Australia is nearly covered by discarded bivalve shells.

Seahorses - Courting and Reproduction

The difference between male as well as female Seahorse may be told apart by making brood pouch. During reproduction process that takes place at night, a courtship ritual dance starts the process. Afterwards, female seahorse than bends the body for distributing eggs in pouch as well as fertilize eggs by male sperm. Pouch is like womb that gives nutrients to developing seahorses. Eggs are held inside pregnant male unless eggs are hatch that take almost 40 to 50 days. Duration of pregnancy relies on temperature of water.

Shearwater:
Shearwaters are long winged seabirds with an average body size. They come to costal regions only to breed.

Their gliding journey over the waves of oceans crossing huge distance is remarkable. There are over 30 species of shearwaters across Oceans. Shearwaters eat squid, all small deep sea fish and related marine food.

Sea Bird Albatrosses:


Albatrosses are huge flying sea birds widely located in the North
Pacific Ocean and Southern Ocean.
Their long and slender wings are very elegant. Albatrosses are frequently found following visiting ships. Their life span is between 80-85 years. They eat squid, fish and krill while Deep Sea Diving.

Fulmar:
Fulmars are sea birds located in the Southern Hemisphere. They peculiarly have thick neck and are generally of same size.


Fulmars eat nearly everything including fish, squid and waste from ships. Like other Sea Birds Fulmars eat Krill and fish.
These sea and shore birds have danger from fishers and tourists. Accidentally, the birds get entangled in fishing nets. Humans should be extra protective towards these Sea beauties.

Marine life not only comprises of fishes and sea shells, but also of birds. History of sea birds is diverse from those of land birds. Sea birds live longer. They have made several versions to living in the sea. When away from the sea, these birds live their lives inland and most of them fly back to the oceans to feed. These birds are mainly distinguished as Sea and Shore birds. There are 200 specie of Sea Birds that spend majority of their lives at sea and shore birds are the ones those reside on the costal regions or are migratory water birds. Following are the classification of these birds which differ significantly in their behavior and lifestyle.

Penguin:

A Penguin is a bird that has wings but can’t fly, however it uses its wings to swim underwater. They are kind of birds that do not fight and spend nearly whole of their lives in the Sea. Countless penguins survive in the freezing water in Antarctica.
They rarely stay on the land except to raise their little ones. Penguins stand straight on their two feet and seem uncomfortable while walking, however they actually walk as fast as humans. Penguins can swim through the oceans, can climb icy mountains by hoping and can travel over slippery ice by sliding on their tummies. Also They eat a range of Deep Sea Fish, squid and krill.

Sea Anemone:


Sea Anemone are very long lived animals, but their appearance is like flowers. They live fixed to some stiff thing such as rock and sea base. They are carnivores and eat fishes, worms etc. They grab their food by their tentacles.




Sea Cucumber:


Sea Cucumbers are invertebrate animals that are cylindrical and live across the sea. They are located in warm as well as cold sea water. Sea Cucumbers eat all decayed or decaying stuffs that glide in the water or sink on the sea base.




Portuguese man-of-war:

The Portuguese man-of-war is a gliding camp of animals that reside in warm seas. They are poisonous, however are eaten by many animals. This living being eats small animals in oceans.

These remarkable creatures, big and small are the wonders of Ocean. They are in a way dependant on each other. Their lives are not directly affected by the humans. However, the huge Deep Sea Fishes depend on these animals.

Shrimp:


Shrimp are invertebrates that lack spine and have hard exoskeleton. These are small animals that reside on the ocean base. Brine Shrimp are omnivores that eat tiny animals and plants.




Plankton:

Plankton is microscopic organism that floats in oceans. It is produced by small plants and animals and is counted primarily in the marine food series of other sea animals like deep sea fish and mammals.




Octopus:

Octopuses are eight-armed animals with soft mushy body. The biggest Octopus is the Giant Octopus and the smallest is the Californian Octopus. The uniqueness of this all Sea Animals is that it has blue blood and if it loses its arm, it re-grows another one. Octopuses eat snails, fishes and small crabs.

When we think of marine life, the first thing that comes to our mind is fish. However there are lives beyond deep sea fishes. As the researches progress, we come across plentiful creatures that are extraordinary and the most remarkable ones. These rare kinds are so exceptional that we get baffled if those are plants or sea animals. To know it better, we will discover these creatures in depth.



Star Fish:
As the name suggests, star fish which is also known as Sea star, appears like a star. It has five tube-like arms with round ends and hard skin. However, star fish is not counted in the fish category, but are echinoderms which mean ‘spiny skin’. Sea stars eat oyster,Sea Corals and all fish and hence are carnivores.




Sea Urchin:
The Sea Urchin is a thorny, solid-shelled creature that exists on the stony sea base. These spherical lives have noxious spines. They travel very slowly across the sea. Sea Urchins eat algae, Sea Sponges and rotten substance.