Spiny Dogfish Shark Research

Madelon Davis

Labeling of a Spiny Dogfish Shark

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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
Phylum

  • Chordata
Class

  • Chondrichthyes
Order

  • Squaliformes
Family

  • Squalidae
Genus

  • Squalus
Species

  • 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.