Interesting facts about barnacles (Crustacea: Cirripedia)
By: Padre Art
" The barnacle is a shrimp-like animal standing on its head in a limestone house and kicking food into its mouth with its feet.", according to Louis Agassiz, the Swiss-American naturalist, succinctly summing up a few of the interesting facts about barnacles. Barnacles were...
Marine food webs: Why zooplankton are important
By: M E Skeel
Zooplankton are the tiny animals that float around on the surface of the ocean and feed on the microscopic plants that make up the phytoplankton, or on each other. They are so small that they cannot easily be seen and so for most people they...
Marine food webs: Why zooplankton are important
By: Padre Art
Water, be it salt water, fresh or even seasonal bodies of water, wherever you find it you will find plankton. Plankton is not one type of organism but is a rich, living soup of two groups of ingredients, zooplankton and phytoplankton, the meat and vegetables...
Interesting facts about barnacles (Crustacea: Cirripedia)
By: M E Skeel
Barnacles are so strange that they were misidentified as molluscs by taxonomists until 1830. After all, they had a shell and live a sessile life, so surely they were related to snails and clams? Their larvae finally gave them away. Barnacle larvae are free-living in...
The significance of sponges in marine ecosystems
By: M E Skeel
Sponges are as un-animal-like as animals can be. They don't move around or make noises. They don't have sense organs or heads or brains. They were thought to be plants until 1825 when they were finally racognised to be simple multicelled animals. They are also...
How do bull sharks live in fresh water
By: Jason Hernandez
The problems faced by a fish in freshwater are the opposite of those faced in saltwater. The physiological strategies fish use to deal with both these problems are called osmoregulation. This is the clue to how it works - "osmo-" refers to osmosis, the absorption...
The hunting habits of bull sharks
By: Jonte Rhodes
The bull shark (Carcharhinus leucas) is one of the more common large shark species that can be found in many coastal areas in warmer waters. They are also known to be one of the most dangerous species of shark to humans, and also have a...
By: Jonte Rhodes
Most people tend to think that sea spiders are merely some kind of spiders that live in the sea, however this isn't the case at all. In actual fact sea spiders are completely unrelated to land spiders, and are only called spiders at all because...
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...
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...

 

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