Spiny Dogfish Shark Research
Madelon Davis
Labeling of a Spiny Dogfish Shark
Explanations of a Spiny Dogfish Shark
Gallbladder
The sharks gallbladder helps with flotation of the shark.
Heart
Atrium and ventricles make up the two parts of the heart.
Kidney
Their kidneys are very flat and almost like a string.
Liver
Is the largest organ in the shark. Also has two main lobes.
Pancreas
The sharks pancreas is a long, and thin organ. It has two sections, a ventral and a dorsal.
Small Intestine
The small intestine helps the shark gain the nutrients it needs by absorbing them.
Large Intestine
The large intestine absorbs the water and helps move the digested food down to the rectum.
Stomach
The stomach is a J shaped. It helps the shark digest its food. Also it has two part that consist of cardiac and pyloric part.
Esophagus
This transports the food from the mouth to the stomach.
Rectum
Works as the storage of waste.
Claspers
Claspers are found in males only. This is similar to what a finger looks like, and aids in sperm transfer during mating.
Lateral Line
Helps to detect water movement, which is called a sensory organ. The line begins at the pectoral fins and ends at the pelvic fin.
Gills
The shark have five gill slits. These slits help the shark breath underwater.
Fun Facts
Classification
Name: Squalus Acanthias Grayfish
Kingdom
- Animalia
- Chordata
- Chondrichthyes
- Squaliformes
- Squalidae
- Squalus
- Squalus Acanthias
Life Span
The spiny dogfish shark life span can go from 30 to 100 years.
Habitat
These specific sharks like water temperatures of 7-15 degrees. They aren't in a lot of places since of their temperature preference. Even though they are spread out, they have the largest shark population. But they typically live in coastal waters.