A Tiger’s roar can reach as far as 2km (1¼ miles) but the screech of the Howler Monkey goes over twice as far – 5km (3 miles).
Elephants communicate by transmitting vibrations through the earth. They can stamp their messages over distances as far as 32km (20 miles). I'm only ten miles from Chester Zoo which coukld explain why the house shakes opccasionally. (Boring people blame it on Tesco's articulated loriries!)
The low frequency sound of the Blue Whale is up to 188 decibels loud (noisier than a jet engine) and can be picked up from as far away as 800km (500 miles) but Fin Whales can chat at 3,000km (2,000 miles) apart.
Assuming there’s a whale or two somewhere out in the Atlantic, how is it I can’t hear any of them?
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