Blue Sharks
Prionace glauca

1/125s at f16, ASA: 200, Kodachrome 200, Nikonos II w 15mm

"Blue Shark." Wikipedia, the free encyclopedia. The blue shark is the most widely distributed animal in the world. It is an oceanic and epipelagic shark found worldwide in deep temperate and tropical waters from the surface to about 350 meters.In temperate seas it may approach shore where it can be observed by divers, while in tropical waters it inhabits greater depths. It lives as far north as Norway and as far south as Chile. Blue sharks are found off the coasts of every continent, except Antarctica. Its greatest Pacific concentrations occur between 20 and 50 North but with strong seasonal fluctuations. In the tropics it spreads evenly between 20 N and 20 S. It prefers waters with a temperature range of 716 C (4561 F) but will tolerate temperatures of 21 C (70 F) or above. Records from the Atlantic show a regular clockwise migration within the prevailing currents.
Offshore New England