|Family||Scientific Name||Author||Year||Common Name|
|Carcharhinidae||Prionace glauca||(Linnaeus)||1758||Blue Shark|
Unique Characters: Upper labial furrows very short, not extending to eyes. Spiracles absent. Week keel present on each side of caudal peduncle. Second dorsal fin considerably smaller than first, height 0.2-0.5 times first dorsal-fin height. Midlength of first dorsal-fin base considerably closer to pelvic-fin origins than to pectoral-fin insertions. Inner gill openings with short gill rakers. Back dark blue, fading to purple-black after death.
Similar Species: None.