How blood can be smelled over distances in water by sharks when it would take the physical water that has the blood awhile to reach them?
In: Biology
The same way you can smell things that are not right next to you. The particles that are sensed by the olfactory nerves diffuse out into the air/water. In neither case is it instantaneous, and the scent gets weaker the further away you or the shark is from the source.
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