Among the options the best answer is "olfactory receptors" - as the sharks have a very good sense of smell. (they have the other receptors, but not as developed) however, they are more famous for their electroreceptrors- they can sense the electric current around them!
Sharks have highly developed olfactory receptors. The olfactory receptors in animals allows them to sense the odor. Sharks have olfactory receptors more sensitive than humans. They have nostrils located on the underside of their snout, which they use for smelling not for breathing. The smell of the prey animal or the blood of any animal is detected by the shark with the help of these receptors.
Answer from: Quest
this is math not biology xd
Answer from: Quest
True but only in the south coastal areas during september and early october.
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