Biology
Insights into the lives of arrow worms (Phylum Chaetognatha)
By: M E Skeel
Arrow worms are small, planktonic, marine predators. They are slender, transparent and just a few centimeters long. There are over a hundred species, mostly found in warm, shallow seas but also occuring in polar regions. They are most common in the Indo-Pacific region where they...
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Insights into the lives of copepods (Crustacea: Copepoda)
By: M E Skeel
Copepods are important little animals in many freshwater and marine ecosystems. They are arthropods so have the usual jointed legs and hard carapace that is good for protection but which must be shed in order to grow. They are crustaceans and so have mandibles and...
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Are human beings still part of nature?
By: Morgan Carlson
Is humanity still a part of nature? Contrary to thoughts of some, the human animal is still organic and thus belongs among the other organic creatures. Yes, humanity is a part of nature, but more importantly; exactly what part of nature are they? To best...
Facts about Flukes (Platyhelminthes Trematoda)
By: M E Skeel
Flukes are flatworms modified for a life of parasitism. They belong to the Phylum Platyhelminthes along wtih free-living flatworms such as Dugesia and the parastic cestodes or tapeworms. All platyhelminths, including the flukes, share a number of characteristics. They are unsegmented and bilaterally symmetrical, meaning...
By: Jonte Rhodes
The gulper shark (Centophorus granulosus) is a deep water shark that tends to live at depths of between 200 and 1200 meters. They are known to reach 5 feet as a maximum length, and feed mainly on small fishes and crustaceans. The gulper shark was...
Sharks and extra sensory perception
By: Jennifer Hartley
Sharks have powerful senses which make them highly successful predators. In addition to standard senses, they have developed a remarkable ability to pick up the electrical signals that are produced by all living things. This process is called electro-reception.Electrical receptors are located on a...
Do Organisms always Evolve into more Complex Forms
By: Author Name Withheld 126
What does it mean to evolve? An organism becomes more adapted to an environment by developing complexities or becoming the lucky one who didn't. In no circumstance, however, does an organism evolve and not become more complex. The more complex organism might go extinct. The...
Insights into the lives of Amphipods (Crustacea: Amphipoda)
By: M E Skeel
Amphipods are an interesting and important group of crustaceans, with about 8000 species known world-wide. They are predominantly marine but there are some fresh water species and even a few terrestrial forms, known as beach fleas. These are the only crustaceans to successfully colonise the...
Information about roundworms (Phylum Nematoda)
By: M E Skeel
Nematodes are simple worms that are found simply everywhere. Buchsbaum (p 175) quotes 'a leading student of the nematodes', who said: "If all the matter in the universe except the nematodes were swept away, our world would still be dimly recognizable, and if, as disembodied...
Fire ants: As painful as their name suggests!
By: David Pitts
If an army fought with the aggressiveness of fire ants, it would never lose a battle. Their sting is indeed painful and persistent, but it is their aggressiveness that sets them apart from other ants. If you observe the top of one of their huge...
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