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Lobster

Lobster

Lobsters belong to the class of invertebrates which belong to the family of Nephropidae. These are the creatures which does not have backbones. They have hard shells like crab, shrimp, crayfish etc. Male lobster is usually called cock and a female lobster as hen or chicken. Lobsters are of two kinds namely the "true" lobster, popularly known as American lobster, and the spiny lobster. The true lobsters posses claws on their first four legs, and this is absent in the spiny lobster. Whereas, the spiny lobster has a pair of horns above their eyes, and this is absent in the true lobster.

Lobsters Facts
The important facts about the species are as follows:

Physical characteristics
These are ten-legged creatures, which closely resemble to shrimp and crabs. They grow up to a size of (25 to 50) cm. These bottom-dwelling, creatures are found in the Oceans of all over the world. They are found in both brackish water and freshwater. These creatures have poor eyesight, but they have highly developed senses of taste and smell. These creatures have an antenna on their head, which they use it as a sensor. They have blue blood like those of spiders and snails. The color of the blood is blue due to the presence of haemocyanin which is present in their blood, and it contains copper. Sea lobsters are of different colors. They can be of blue-green, yellow, red, or white. Out of all these only the white color sea lobsters known as true albinos do not turn red when they are cooked. These lobsters can swim at a speed of about 5 meter per second.

Diet
Sea lobsters feed on crabs, star fish, fish, mollusks and sea urchins. Apart, from these they are also known to feed on algae, other plant life and even other lobsters. These creatures have a reputation of scavengers, but they like to feed on live prey, such as fish, crustaceans and mollusks, worms.

Reproduction
The reproduction process seems to be varied in these species. The copulation occurs head to head and belly to belly. In the mating process the male of these species transfers a packet of sperm to underside of the female. The female are capable to store the sperms for several months. The female use these stored sperms to fertilize the eggs externally which she lays. The egg-laying season of these species is in between July and August. The female can lay a large number of eggs, which ranges from (5000 to 63000), in numbers. The hatchlings after fertilization get dispersed with the water currents. After that they go through several molting stages and finally travel to the bottom of the Ocean and spend rest of their life there. These creatures have an average life span of about 15 years, but they are capable of living up to the age of about 100 years.

Sadly, the population of these species is declining tremendously due to over fishing. The number of clawed lobsters in Europe is declining more tremendously. Apart from these, the increase in the pollution level is causing several diseases in these species and thus decreasing their population. The lobster aquaculture operation has been run in the past to increase their population but all was in vain. So, the government needs to do something fruitful which would increase the population of these lobsters.