Amazing animals. By Alejandro Cañas B.

THE BEST FATHER OF THE WORLD (THE SEA HORSE)

The seahorse is a small very specializing salt-water fish. It´s name refers to seemed of his face with the terrestrial horses, but nothing else it is possible to compare with them.

They reproduce from the spring until the summer’s months. In this epoch, the male and the female interlace with the tail. After a wedding dance, in this position, the female penetrates of his sewer, with help of a genital papilla of some 3mm. Of length, his eggs to the bag ventral of the males, that it is covered with soft fabric and arranged in compartments, to support every separated egg, as in spongy cells.


A male can be visited certainly number of females who leave eggs him, but if an egg doesn´t manage to come to one of these departments doesn’t develop. Nevertheless, which fall good, develop in this bag up to 50 or 60 days and dead inside it.

The birth or ejection of the young men seems to be exhausting for the father. Supporting firmly with the tail as an aid, he rubs his bag against a shell or rock until the young men go out, with fractions of his internal fabrics.
A male of good size can give birth more than 400 young men, who are the perfect reply of the adult.

AMAZING ANIMALS

NICOLAS ALVIAR 200616208
DERECHO
GR.10
10.04.08

Some animals have developed amazing adaptations to their environments. Many different types of energy exist in the environment, some of which humans cannot detect. Here are some examples of how some animals sense the outside world and the anatomical structures that allow them to do so.

For example:

Bees
Can see light between wavelengths 300 nm and 650 nm.
Have chemoreceptors (taste receptors) on their jaws, forelimbs and antennae.
Worker honey bees have 5,500 lenses ("ommatidia") in each eye.
Worker honey bees have a ring of iron oxide ("magnetite") in their abdomens that may be used to detect magnetic fields. They may use this ability to detect changes in the earth's magnetic field and use it for navigation.
Can see polarized light.

Bats
Can detect warmth of an animal from about 16 cm away using its "nose-leaf".
Bats can also find food (insects) up to 18 ft. away and get information about the type of insect using their sense of echolocation.
Can hear frequencies between 3,000 and 120,000 Hz.
Snakes
Pit-vipers have a heat-sensitive organ between the eyes and the nostrils about 0.5 cm deep. This organ has a membrane containing 7,000 nerve endings that respond to temperature changes as small as 0.002-0.003 degrees centigrade. A rattlesnake can detect a mouse 40 cm away if the mouse is 10 degrees centigrade above the outside temperature.
The tongue of snakes has no taste buds. Instead, the tongue is used to bring smells and tastes into the mouth. Smells and tastes are then detected in two pits, called "Jacobson's organs", on the roof of their mouths. Receptors in the pits then transmit smell and taste information to the brain.
Snakes have no external ears. Therefore, they do not hear the music of a "snake charmer". Instead, they are probably responding to the movements of the snake charmer and the flute. However, sound waves may travel through bones in their heads to the middle ear.

Inusual Job. By Alejandro Cañas B.

MORTAL FISHING
This activity develops in October, with a season that goes from four days and that strange comes to more from twelve; in shifts of 20 hours exposed to an extreme climate, big waves and constant danger of suffocation, hypothermia and serious injuries. But in counterpart, with the possibility of winning up to 100,000 dollars in five days of work.
Alaska is the scene where there is carried out what might be named without fear of doubts, the most dangerous work of the world. It is a question of the fishing crab, a office for rash and brave men that they do not suffer from fear of the water and it is not important for whom to challenge to the death.
The American dream attracts many Hispanics who every year put in risk his life, having travelled up to what might be considered to be the end of the world; in order to try to extract a fortune to the sea. Here the gold this one in the crab that lives in the entrails of a violent and cold ocean that exists between Alaska and Siberia.
Almost every fisherman of crabs of Alaska returns to the coast with serious injuries and some class of wound: hands and squashed fingers, and ribs and broken extremities. And in the worst accidents the people die: the constant danger of suffocation, results in that more than 80 % dies drowned, as result of having being dragged by the hut, because of the incredibly violent seas.
Obviously, the risk implies an immense remuneration and in case of these fishermen it is in the habit of being very juicy: in counterpart to the immense danger there exists the possibility of winning up to hundred thousand dollars in five days of work.
In conclusion can say that this one is the work most dangerously of the world, but also it is the best paid.