Wednesday, September 26, 2007

Parrot fish, lionfish and clown fish

The blue parrot fish, as the name suggest, has beaklike jaws. When young, these fish are light blue. They turn darker blue as they get older.

The lionfish is one of the most unusual creatures on the reef. Its spines are very poisonous and can be dangerous even to humans. The lionfish uses its spines to defend itself, not to attack.
On of the biggest dangers to the Great Barrier Reef are the thorny starfish which multiply in huge numbers and crunch their way through the living corals. Few creatures will eat them as they are quite poisonous.

The clown fish lives among the tentacles of large sea anemones. This brightly colored fish is immune to the anemone’s stinging tentacles. It helps to attract other fish that the anemone catches and eats. So the clown fish is in safety and isn’t hungry.

Monday, September 24, 2007

Great Barrier Reef, or The magic underwater world

Hello! Today post is not about animals, but about very interesting thing - barrier reef :P

The Australian Great Barrier Reef is a largest coral reef in the world. It’s 2000 km. long and can be seen from space! Just take a look at this natural wonder!

Corals make wonderful shapes. Some look like trees, others look like flowers. There are more than 400 types of coral in the Great Barrier Reef. Corals are tiny animals that live only in warm seas. They need warmth and bright sunlight all the year round. When many corals grow in the same place they make a coral reef.

The edge of the reef facing the ocean often forms a steep cliff. There are more then 1.500
specials of fish and 4000 types of mollusk in the Great Barrier Reef.
They are all the colors of the rainbow.
In spite of its colorful markings, this angelfish can be hard to see among the bright colors.

Sunday, September 23, 2007

Jellyfish: slippery and wonderful

After some days of inactive the blog comes back :) I hope that new post will be published daily.
New post is about Jellyfish.

Jellyfish have been around for 650 million years. They were here before dinosaurs and sharks! Scientists think there may be 2000 species of jellyfish. They come in all sorts of color: from pale pink or blue to bright orange-red or screaming yellow.
JellyfishSome jellyfish are transparent. Jellies also range in size from about two and a half centimeters to more than two meters long. Jellyfish are more than 95 % water and have no heart, bones, or brain, and no real eyes.
Where there’s water – from icy polar seas to tropical Pacific shores – there are jellyfish.

JellyfishSome of them live in fresh water. All jellyfish sting, but not all jellyfish have poison, that hurts humans. Of the 2000 species of jellyfish only about 70 seriously harm or occasionally kill people.
The most dangerous jellyfish are:
  • - Australian box jellyfish;
  • - Lion’s mane;
  • - Portuguese man-of-war;
  • - Sea Nettle.The
Australian box jellyfish, or sea wasp, is the most dangerous jellyfish in the world. It can kill you within minutes. If it stings you, you can become paralyzed and then drown.
JellyfishA large box jellyfish has enough venom to kill 60 people. Many beaches in Australia have kits with special anti-venom in case it happens to swimmers.
A soup of driver tentacles was once used in a murder attempt – it wasn’t successful.
The Portuguese man-of-war is world-famous for its extremely painful sting. In fact, it is not a true jellyfish, but rather a collection of separate organisms each with a special job to do, working as a unit.