Bear Know

We often find something that lights up at night time, especially on the riverside. Maybe time to enjoy their beauty at night, the question arises about the animal. According to Wikipedia the firefly is a type of insect that can remove light clearly visible at night. This light is produced by the “cold light” containing no ultraviolet or infrared rays and has a wavelength of 510 to 670 nanometers, with a pale red color, yellow, or green, with a beam up to 96% efficiency.

Classification of firefly:
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Infraclass: Neoptera
Superorder: Endopterygota
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Elateriformia
Superfamily: Elateroidea
Family: Lampyridae (Latreille, 1817)

Only male fireflies have wings and can fly, while the female firefly will be embedded in foliage or on the ground. To attract close attention mate, male fireflies are out of light that comes out of his body, and shows a specific message to the female. The light they produce light without heat are called Luminescence. Luminescence in the firefly’s body produced by a substance called Luciferin. Now, substance Luciferinini join with oxygen to remove the light. Removing the light is usually started from the male firefly, and then returned by female fireflies. Males use light to find a female, and mating occurs. Firefly light pattern differs among each species.

After the mating, the female firefly will lay its eggs under the soil surface. The eggs will hatch into larvae after 3-4 weeks and will continue to be fed until the summer ends. After about 1-2 weeks from the end of summer, the larvae will turn into pupae, then turned into an adult firefly.

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Jellyfish is a type of marine animals belong with the class Scyphozoa. Tufted umbrella-shaped body, can make the itching of the skin if touched. Beside these animals can also sting you.jellyfish’s body consists of 95% water. These animals have no spine. They can live almost in all climates. tentacle body (an organ that resembles a proboscis), without the eyes and brain.There’s that have a mouth and there is not. Have air bubbles in the upper body and a lump of flesh colored blue.

Jellyfish are beautiful animals, translucent body, the type of jellyfish This jellyfish can also emit light from their bodies. Issued light jellyfish jellyfish’s body not only as an accessory to beautify the body, but also as a means of self defense from predators. At the time of jellyfish Jellyfish being chased by a predator, his body will issue a light. But when bitten, body parts bell-shaped jellyfish  that will extinguishes the light, while the tentacles are still glowing released from the body with the aim to fool predators. Jellyfish jellyfish will flee when predators pursuing the release of glowing tentacles.

As has been mentioned that some jellyfish has poison, poison owned jellyfish. Substitute for self-defense function of light on other types. At one of its kind, jellyfish box jellyfish (box jellyfish) has a very deadly poison. Venom contains a toxin that attacks the heart, nervous system and skin cells. Beside deadly jellyfish stings from box jellyfish tentacles also cause tremendous pain. Sting can cause death.   Jellyfish is not a species of fish, but sometimes there are many false assumptions about the jellyfish. From a very different body structures of fish, fish have a backbone, while the jellyfish has no bones. do not have a brain or central nervous system. Jellyfish have no brain or central nervous system, but the jellyfish has a lose network of nerves, located in the epidermis, which is also called “neural nets.”

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The spider is a species of animals with two body segments, four pairs of legs, no wings and do not have chewing mouth. The spider is included in the order Araneae. Field study of spiders is called arachnologi. The main food of spiders are insects. Not all spiders are able to make nets, but they are able to make benarng silk. Spider silk from thin strands of protein fibers, but strong, comes from the spinneret glands located at the back of his body. The silk fibers are used to help the movement of the spider, swinging from one place to another, entrap their prey, making the egg sac, protect the nest hole, and others.

Spiders have eyes with single lenses, most spiders have poor eyesight, they are only sensitive to light and dark colors, but there are also some spiders have the good eyesight, they can recognize colors. In most hunting spiders recognize through vibration, both in silk webs or on land, water, or where he landed. There is also a spider that is able to taste the difference of air pressure. Sense of touch a spider is located on the hairs on his leg.

In most of the hunting spider waiting at prey to come close, they hide behind the leaves, and there are several types of spiders whose bodies camouflaged with its surroundings, it is easier to do the spider in disguise.

Spider has fangs that are usually injected in the prey, other than that owned by the fangs of spiders also serves to destroy its prey. Spider’s fangs inject their prey and suck it dry.

Some weavers spiders can wrap the body of its prey with silk twist threads. This ability is very useful especially if the prey has dangerous self-defense tool, such as bees that have a sting, or if the spider wanted to save some time whiles waiting at their prey when the preferred to enjoy it later.

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