finning
verb
Definitions
To cut the fins from a fish, shark, etc.
(Of a fish) to swim with the dorsal fin above the surface of the water.
To swim in the manner of a fish.
Example: A neutrally buoyant diver does not need to fin to maintain depth.
To provide (a motor vehicle etc) with fins.
noun
Definitions
The act of removing a live shark's fin, and releasing the shark back into the sea.