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Blue Shark

Prionace glauca

Shark Family

Saltwater Fish Identification

Blue Shark

Common Name(s):
Blue Whaler, Great Blue Shark, Bluedog
The Blue Shark is recognizable by its brilliant blue color. It is dark cobalt or indigo blue dorsally lightening to bright blue on the flanks and white on the belly. The tips of the pectoral, dorsal, and anal fins are dusky. The body is very slender with a long snout, which is narrowly rounded, the length longer than width of mouth. The teeth are serrate, triangular and curved in the upper jaw and narrower in lower jaw. The pectoral fins are very long and narrow and the dorsal fins are relatively small with no dermal ridge.
Similar Fish:
Silky Shark
Feeding Habits:
Blue Sharks ordinarily feed on small schooling fishes; however, they are known to follow vessels for days feeding on offal.
In the Atlantic they range from Nova Scotia to Gulf of Maine, rarely to Chesapeake Bay, to Brazil. In the Pacific they are from South Alaska to Chile.
The Blue Shark is found in shallow coastal waters over sand or mud, and far out at sea.
Typical Size:
Blue Shark average 437 pounds and almost 13 feet long.
World Record:
528 pounds, 0 ounces (IGFA)