Spinner Shark Identification Guide

Key identification features

• Slender, streamlined body, grey to bronze above with a white belly and a faint pale flank stripe
• Black tips on the first dorsal fin, pectoral fins, pelvic fins, second dorsal fin, and notably the anal fin
• Long, pointed snout and a first dorsal fin set further back than most requiem sharks (behind the pectoral fin insertion)
• Typically 1.5-2 m (5-6.5 ft) in length
• Famous for vertical spinning leaps while lunging through baitfish schools

Common look-alikes

• Blacktip shark: near-identical coloring but has a plain white (not black-tipped) anal fin and a first dorsal fin positioned further forward.
• Silky shark: lacks black fin tips and has a smaller, more rounded first dorsal fin with a rounded free rear tip.
• Dusky shark: bulkier body without black fin markings.

Where you'll see one

Spinner Sharks range through warm continental shelf waters worldwide, from the surf zone to offshore banks, and are frequently seen near the surface chasing schooling fish, especially during seasonal baitfish migrations.