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smelling in water

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1280967.  Thu Apr 12, 2018 10:54 am Reply with quote

My 2015 paperback edition of QI book of animal ignorance has, in the entry of Shark:

"Two-thirds of a shark's brain is dedicated to smell: it can detect blood diluted in water at strengths of one part in a million from a distance of a quarter of a mile"

But in the entry for Whale, it says:

"Communicating in water is also a challenge. Smell is useless"

Seems to be a bit of a contradiction. If smell is useless underwater to a whale, how come sharks can use that sense?

in friendship


Alfred E Neuman
1280996.  Thu Apr 12, 2018 4:05 pm Reply with quote

I's say it's something to do with sharks breathing water and whales breathing air.

1281027.  Fri Apr 13, 2018 3:41 am Reply with quote

Doh! - of course! I had completely forgotten that very obvious difference.

in friendship


1324898.  Fri Jun 21, 2019 10:08 am Reply with quote

Nice tip!


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