How come dolphins have sonar and humans don't?

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How come dolphins have sonar and humans don't?

it could have been helpful for the blind..lol

2007-01-09 15:45:03 · 3 answers · asked by MS 2 in Science & Mathematics ➔ Biology

3 answers

They need it and we don't, Oh yeah it would be nice.

2007-01-09 15:51:53 · answer #1 · answered by lonetraveler 5 · 0⤊ 0⤋

You are wrong in your thinking. There are a very few people who have demonstrated the ability to hear echos (echo location) much like dolphins and bats. Maybe we had it at one time and just lost the ability because we didn't use it. There was just a show on I think 60 minutes or maybe 20/20 about one such young man.....maybe a month or so ago.

2007-01-10 00:15:22 · answer #2 · answered by Anonymous · 0⤊ 0⤋

Two reasons.

1. We live on land, sonar needs water.

2. We didn't need it so it didn't evolve.

2007-01-09 23:52:58 · answer #3 · answered by michaelb1020 2 · 1⤊ 0⤋