Do Dolphins Ever Sleep?: 211 Questions and Answers about Ships, the Sky and the Sea

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Sheridan House, Inc., 2007 - Sports & Recreation - 294 pages
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Why does a dinghy slid backward as we try to climb out? Why are cold seas green and warm seas blue? Why do barnacles attach themselves to boat hulls? When was the rudder invented? What have been the main steps in the evolution of sailboats? How does wind create waves? These are some of the questions asked about the sea, the sky, wind and weather, ships, sailing, navigation and the life aboard answered in Do Dolphins Ever Sleep?
 

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Contents

Contents
Preface
The
Howdidthefirstseasform? 1
Does all the water that evaporates from the ocean eventually returntoit? 4
Isthereadifferencebetweenanoceanandasea? 5
Howfastarethecontinentsdriftingapart? 9
Howfastdowavestravelinwater? 18
What explains the almost total absence of tides in Tahiti? 34
Whyarecoldseasgreenandwarmseasblue? 36
Life in the
Whatisplankton? 47
seawater? 49
Howdofishgettheoxygentheyneed? 51
Why do fish congregate around sunken wrecks and buoys? 55
Whyisthefleshoftunafishred? 56

Whydowavesgrowlargerwhentheyreachabeach? 23
Iceistransparentbuticebergsarewhite Why? 25
If the Sun attracts the Earth much more than the Moon does why does the Moon create larger tides than the Sun? 28
If the tide is mainly due to the attraction of the Moon why is there also a high tide on the opposite side of Earth the side facingawayfromtheMoon? 29
Why are tides so much bigger in some places than in others? 31
i
Whydodolphinsliketoplaywithbowwaves? 63
Iscoralananimaloraplant? 70
What are all those slowswimming turtles doing in the middle of the Atlantic 1000 miles from land where they lay their eggs? 77
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About the author (2007)

Pierre-Yves Bely is an engineer who worked with NASA and the Paris Observatory. He is a passionate cruiser and during his many crossings of the Atlantic and the Pacific he asked himself all those questions and gives us the answers found after comprehensive research. Sally Bely, his wife, translated and adapted the book.

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