Chondrichthyes
Great white shark
classification
Kingdom-Animalia
Phylum-Chordata Class-Chondrichthyes Order-Lamniformes Family-Lamnidae Genus-Carcharodon Species-Carcharias Common Name- Great White Shark |
MorphologyGreat white sharks have bilateral symmetry. Their powerful body is supported by a cartilaginous skeleton, streamlined for efficient movement through the water, and has a pointed snout, two large, sickle-shaped pectoral fins and a large triangular first dorsal fin. The mouth is armed with an array of sharply pointed serrated teeth.
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Biology
Great whites are at the top of the marine food chain and are very skilled predators. They feed predominately on fish but will also consume turtles, molluscs, and crustaceans, and are active hunters of small cetaceans such as dolphins, seals and sea lions. Using their acute senses of smell, sound location and electroreception, weak and injured prey can be detected from a great distance. Efficient swimmers, sharks have a quick turn of speed and will attack rapidly before backing off as the prey weakens. Great white sharks, unlike most other fish, are able to maintain their body temperature higher than that of the surrounding water using a heat exchange system in their blood vessels.
https://www.youtube.com/watch?v=SCUc3U8WVMo |
distribution map
importance: ecological and economical
Sharks play a very important role in the oceans in a way that an average fish does not. Sharks are at the top of the food chain in virtually every part of every ocean. In that role, they keep populations of other fish healthy and in proper proportion for their ecosystem. The teeth are considered very expensive, sometimes; one tooth is worth up to $10000. This tooth is used as a necklace, and in some parts of Africa, they use it to make a spear or an arrow.
facts
1. Great white sharks are the largest predatory fish on Earth.
2. Their mouths are lined with up to 300 serrated, triangular teeth arranged in several rows.
3. The Great White Shark lives for about 25 years.
4. A Great White Shark is capable of eating sea lions whole.
5. A Great White Shark may use and lose more than one thousand teeth in its life time.
2. Their mouths are lined with up to 300 serrated, triangular teeth arranged in several rows.
3. The Great White Shark lives for about 25 years.
4. A Great White Shark is capable of eating sea lions whole.
5. A Great White Shark may use and lose more than one thousand teeth in its life time.
vocabulary
pectoral fins- (in fishes) either of a pair of fins usually situated behind the head, one on each side, and corresponding to the forelimbs of higher vertebrates.
serrated-having a notched edge or sawlike teeth, especially for cutting.
crustaceans- any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice.
efficient-performing or functioning in the best possible manner with the least waste of time and effort.
predatory-preying upon other organisms for food.
serrated-having a notched edge or sawlike teeth, especially for cutting.
crustaceans- any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice.
efficient-performing or functioning in the best possible manner with the least waste of time and effort.
predatory-preying upon other organisms for food.
resources
http://animals.nationalgeographic.com/animals/fish/great-white-shark/
http://sharkfacts.org/great-white-shark-facts/
http://dictionary.reference.com/browse/predatory?s=t
http://sharkfacts.org/great-white-shark-facts/
http://dictionary.reference.com/browse/predatory?s=t
Osteichthyes
clownfish
classification
Kingdom- Animalia
Phylum- Chordata Class- Actinopterygii Order-Perciformes Family- Pomacentridae Genus- Amphiprion Species-Boney fish Common Name- Clownfish biologyThe clownfish has made many adaptations in order
to survive better in its habitat. First, this particular species has more
rounded caudal fins
than other anemonefish, making it a less effective swimmer.
These fins, however, enable the fish to make quick darting movements. In order
to avoid predators by hiding within their host anemone, Amphiprion
ocellaris have become resistant over time to the stings of the anemones in
which they live. This resistance is enabled by a mucus produced by the
clownfish, which coats the body. As a result of this adaptation, the slow
swimming fish is given a place to live and hide from predators. One drawback
from this adaptation, however, is that it is not permanent. If the fish is
absent from the anemone for a long period of time, an acclimation period must
occur before the fish can reenter the anemone unharmed. Therefore, the
adaptation is only good while the fish is in close contact with its
host.
https://www.youtube.com/watch?v=V_5LUBOtHgA |
morphologyClownfish have bilateral symmetry. It is believed that clownfish have the ability to adjust their size via
food intake and rate of growth, with individuals with lower rank staying
small. Clownfish are usually orange with white stripes just like the one you might see in Nemo. |
distribution map
importance: ecological and economical
The economic role for clownfish is to lure in food to the anemone by using its bright body coloration. Also, by eating dead tentacles, they help anemones keep free of these. Keeping in mind that clownfish and sea anemones share a symbiotic relationship. Clownfish have a positive economic importantance for humans through the pet trade industry.
facts
1. Surprisingly, all clownfish are born male. They have the ability to switch their sex, but will do so only to become the dominant female of a group. The change is irreversible.
2. Clown fish are between 2 and 5 inches long.
3. There are 28 different species of clown fish.
4. Clownfish are also known as "anemonefish" because they live in community with sea anemones.
5. Clownfish is immune to the venom of anemone because it has thick layer of mucus on the surface of the body.
2. Clown fish are between 2 and 5 inches long.
3. There are 28 different species of clown fish.
4. Clownfish are also known as "anemonefish" because they live in community with sea anemones.
5. Clownfish is immune to the venom of anemone because it has thick layer of mucus on the surface of the body.
vocabulary
caudal fins- the terminal vertical fin of a fish.
adaptation- a form or structure modified to fit a changed environment.
anemone- any of various plants belonging to the genus Anemone.
tentacles- any of various slender, flexible processes or appendages in animals, especially invertebrates, that serve as organs of touch.
venom- the poisonous fluid that some animals, as certain snakes and spiders, secrete and introduce into the bodies of their victims by biting, stinging.
adaptation- a form or structure modified to fit a changed environment.
anemone- any of various plants belonging to the genus Anemone.
tentacles- any of various slender, flexible processes or appendages in animals, especially invertebrates, that serve as organs of touch.
venom- the poisonous fluid that some animals, as certain snakes and spiders, secrete and introduce into the bodies of their victims by biting, stinging.