Wednesday, May 5, 2010

Notice

To view the other Vertebrates you must go into older posts which is at the bottom of this page.

Invertebrate- Worm- Round Worm




Round worms or sometimes known as Nematodes are a type of worm. These worms are truly remarkable, they can be found almost anywhere. From land to water, from rain forests to high up in the mountains, and even in Antarctica even in the human body! These are just a type of worm there is thousands of different smaller species with in this particular group of invertebrate. Most round worms are only 2.5 millimetres in length and sometimes even microscopic. Round worms are slender and their heads are actually very distinctive. They have either 3 or 6 lips and have a set of small teeth behind the lips. These worms only have 1 layer of cells which is covered by a thick collagenous cuticle, sometimes the collagenous cuticle can be made up of 3 layers.
I got my information from:
http://www.wettropics.gov.au/pa/pa_lowly_worm.html
http://en.wikipedia.org/wiki/Nematode

Invertebrate- Echinoderms- Beaded Sea Star





Beaded sea star comes in a few different colours, such as; pink, pale purple, brown and yellow. The small white dot on the beaded sea stars front is the inlet to the water vascular system. Every echinoderm has one but it is usually a lot harder to see where as on the Beaded sea star it is rather easy find. The largest that these sea stars can grow up to is 6 inches but these are still pretty small. Underneath their feet they have a large number of small suction cups which are used to collect oxygen which they need in order to live. The Beaded sea star is declining in population due to humans polluting their water and the over harvesting of the Beaded sea stars food. If we don’t change our ways there is a big chance that these animals could become extinct.
I got my in formation from:
http://www.julianrocks.net/echinoderms/UniophoraGranifera.htm
http://www.poineerschooldistict.org/education/components/scrapbook/default.php?sectiondetailid=2913&PHPSESSID=c1cc889686cd2b1981c3aa4bfb0d2ff4

Tuesday, May 4, 2010

Invertebrate- Sponge- Red Beard Sponge





The Red beard sponge a red or orange sponge that branches out, sought of like some plants do. Each of the Red Sponges branches is about 6 millimetres in diameter. This sponge can grow up to 20 centimetres in height. They have pores all over the sponge that take in water to keep it alive and then when it is taken from the water it dries out and turns into a brown colour.
I got my information from:
http://www.exoticsguide.org/species_pages/c_prolifera.html

Invertebrate- Molluscs- Knobbed Whelk




The Knobbed whelk is the second largest species of busycon whelk, being able to grow up to 305 millimetres. The shell of the Knobbed whelk is dextral, in other words the shell is right handed. If you held up the shell with the spiral end up and the opening facing you, the opening will be on the right hand side. The Knobbed whelk lives between deep and shallow water depending on the time of year. During Summer and winter they live in the deeper parts of the water, which can be up to 48 meters below the water’s surface. Then during autumn and spring they move to the shallow waters. When they are in the shallow waters they hunt for oysters, clams and other bivalves. When the Knobbed whelk opens the shells to eat its prey, the put the edge of their own shell to wedge open the preys shell and then they use their proboscis to eat their victim.
I got my information from:
http://www.en.wikipedia.org/wiki/Knobbed_whelk

Invertebrate- Cnidarians- Neon Jellyfish




The Neon jellyfish is a jellyfish that can grow to only be 13 centimetres in length. The creature is so delicate and fragile that they can break into pieces just from the impact of swimming into a net. The Neon jellyfish has no kind of pigments in its body which neither produce light nor do any other jelly fish for that matter. It was the 159th jellyfish that was discovered in Australia, it was discovered by a woman named Lisa Gershwin. And in her opinion this species of Jellyfish is just splendid. She found it on the 16th of March 2009 and there is very little known about this amazing new species of jellyfish.
I got my information from:
http://www.jellyfishfacts.net/neon-jellyfish.html
http://www.thistasmania.com/tasmanias-neon-jellyfish-find/

Invertebrate- Athropod- Daddy Long Legs




The Daddy long leg is a spider which can be found in damp dark areas but they can also be found in warm dry places. They Daddy long leg is a spider that is harmless towards humans due to their very small fangs that are unable to penetrate a human’s skin. Their body is about 10 millimetres in length and they have 8 legs which can grow up to 50 millimetres depending on the size of their body. One peculiar thing about this type of spider is that it can have 6 or 8 eyes. A Daddy long leg makes a web that is messy and tangled and uses it as a home and to trap its prey. Trapping their prey is very simple, prey lands in web and can’t get out, Daddy long leg wraps the prey in a web and then makes its lethal bite to kill the prey then it eats right then and there or leaves it and eats it later.
I got my information from:
http://www.brisbaneinsects.com/brisbane_weavers/Pholcidae.htm
http://en.wikipedia.org/wiki/pholcidae