How come a shark swims at just the right level so you can see its fin?

Question

I saw one a few weeks ago,about 200 yards off-shore.

Answer 1

Several species of shark(Tiger, Great White and Blue being most common) show only the dorsal fin above water level to attract seabirds who, from a distance, see the fin as surface level fish(food). The bird activity increases, which encourages surface feeding fish to feed in deeper water. Unbeknownst to seabirds/high and low feeders, the exposed shark fin has increased activity in the area, therefore providing increased food opportunities in deeper water where a shark feels less intimidated and can eat at will.

Answer 2

the majority of sharks the majority of the time do not swim to where their dorsal fin is out of water. watch aerial fotage of a beach, and you will see them swimming around without people knowing it. the fin would do no good at stabilizing them were it always out of water

Answer 3

You see the fin when they're feeding at or near the water's surface or just wanting to look around topside.

Answer 4

sharks are the only fish that have to keep moving to stay afloat.
if they dont move they sink.
swimming at sea level is the only time one sees them,unless you are scuba diving and see them more commonly moving beneath the surface.
hope this helps.

Answer 5

They don't always do this. He was probably trying to look at something on the surface, so he swam as high in the water as his body would go.