Can you hear that? No but a porpoise could!

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 -->Turtles do not have outer ears like humans do.  They have thin flaps od skin that cover internal ear bones, meaning htat they can hear vibrations and low frequency sounds - but tht is about it.

Goldfish can hear from 100 Hz - 2000Hz.  A Police whistle is arounf 2800 Hz, so neither the turtle or the goldfish can hear it.