Submitted by DiscoTargeryan t3_y3drdm in askscience
Comments
Mental_Noise_5414 t1_iscwk61 wrote
Do sharks have noses or are their olfactory receptors somewhere else?
[deleted] t1_iscq5wk wrote
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[deleted] t1_isctvcx wrote
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Ganymede25 t1_isd71xo wrote
If I stick my hand in my reef tank, the fish that were already staring at me like they had never been fed in their entire lives will swim toward my hand. If I put in brine shrimp, all the fish, including the ones that were hiding in the rocks will come out quickly.
wattnurt t1_iscrmfr wrote
.... you mean fish? Of course they can smell things, sharks for example are notorious for smelling blood from very far away.
If you are asking about non-aquatic animals, they can breathe as little underwater as you can.