Hammerhead Shark

HOME TYPES SPECIES FACTS BODY POPULATION BEHAVIOR HISTORY
MYTHS DANGERS TALES HELP GALLERY GUESTBOOK LINKS WHALES

Parts of a Shark

Body Parts of a Shark

Photo modified from Sharks and Rays. TC Tricas, K Deacon, P Last, JE McCosker, TI Walker, L Taylor. 1997. Nature Company Guides, Time Life Book Series. Weldon Owen Pty Ltd San Francisco.

Respiration

The shark extracts oxygen from the water to metabolize their food. The gills are found on five to seven vertical arches that form the walls of the external gill slits. In a seperate chamber beneath the gills, the heart pumps oxygen-depleted blood to capillary beds in the arches. Water is pumped into the mouth and out across the gills counter to the direction of blood flow. This exchange system greatly enhances the rate and efficiency of oxygen diffusion into the blood.

Respiration

Photo modified from Sharks and Rays. TC Tricas, K Deacon, P Last, JE McCosker, TI Walker, L Taylor. 1997. Nature Company Guides, Time Life Book Series. Weldon Owen Pty Ltd San Francisco.

The illustration above shows the heart, gill arches and direction of water flow. Water enters the mouth (and spiracles), passes over the gills and out the gill slits.

Back

HOME TYPES SPECIES FACTS BODY POPULATION BEHAVIOR HISTORY
MYTHS DANGERS TALES HELP GALLERY GUESTBOOK LINKS WHALES