Reply #24: How long does that take?

[imenja]

. . . for the water to recede and then come back in? My impression it isn't that long, not enough time for many to get very far away. Also, most people have never experienced a Tsunami before. It's not terribly surprising they wouldn't know what was going on. Such things are instinctual to animals, but not humans. There were reports of children gathering fish left on the sand as the tide receded.
How do animals detect magnetic changes? Is that something they feel or hear?