A great white shark collided with a surfer while he was out in the water near Drakes Beach, prompting Point Reyes National ...

We grab the dorsal fin. We put four holes in the top of the fin ... a non-profit research group that tracks marine life. An adult male great white shark named Bob was last seen Sunday ...

A 10-foot great white shark that vanished off satellite tracking ... To show up on satellite tracking, a tag on the dorsal fin needs to be above the surface for at least 90 seconds, OCEARCH ...

A 10-foot great white shark surfaced off the Space Coast of ... The satellite tag attached to Penny's dorsal fin emitted a ping with location information when it broke the water's surface ...

A great white shark, tagged by the nonprofit research ... at 8:03 p.m. A ping means the satellite tag affixed to the shark's dorsal fin broke the water's surface long enough to transmit ...

Keji, a 9-foot 7-inch great white shark, tagged by the nonprofit research ... tagged sharks via satellite tags attached to their dorsal fins. When the tag breaks the water's surface long ...

(This story was updated to correct the number of times the shark pinged around Florida in December.) A 10-foot great white shark ... tag attached to Penny's dorsal fin emitted a ping with ...