So I was thinking:
How do sharks smell in the water? Does smell exist in water? Is smell a form of energy, like light or sound?
Turns out that smell is not a form of energy, rather it is a chemical compound. That means it is a thing. It is something that can be touched, although on a microscopic level, but still where light and sound are intangible, just energy, smell (aka odor) is tangible.
So, the original thought or question is still unanswered. How do sharks or fish or whatever smell in water. How is it that odor travels in water. And how does it do it in great distances? On those shark shows they dump bloody chum in the water and sharks seek it out and come to the boat. The only thing I can figure is that the shark show does not televise the elapsed time. Its got to be that they dump the blood and wait, and wait, and wait for it to dissipate over a great distance. That said why doesnt the odor dissipate? How can there be any odor remaining after an hour? You would think that like smoke it would dissipate and fade away. I wonder if a shark, or fish, can smell just one tiny teeny cell (if that is the correct nomenclature) of odor. That would be like one of us seeing just one little single piece or cell of smoke.
If Im correct, then, that is super fucking cool.