Unlike black marlin, a blue marlin’s pectoral fins are never completely rigid. Except in the largest fish, the pectoral fins can fold flat against the sides. Blues also have a tall, pointed dorsal fin ...

Sailfish are a little less noticeable because if the dorsal fin does surface, you’re likely only going to see a small black triangle. On the other hand, a marlin’s dorsal fin is much stiffer, so it’s ...

The longer the fight, especially for blue marlin, the longer the recovery period ... swims away with a tag attached below its dorsal fin. The tag tracks data, including swimming depth, tail ...

Blue marlin are sexually dimorphic ... "We also look at her morphology. She has a dorsal fin that comes up and allows her to turn right and left in the water column when she gives that one ...

It has low, round dorsal fins, and rigid, non-retractable pectoral fins that aid in its speed. There is some debate about the ...

When flattened, their dorsal fin can help turn the sailfish into a torpedo that shoots through the water. For reference, an Olympic swimmer swims at a speed of about five miles per hour. One of the ...