... Science Frontiers ONLINE No. 34: Jul-Aug 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Our aquatic phase!Elaine Morgan, author of The Aquatic Ape, reviews new evidence supporting the Aquatic Ape Hypothesis. Sir Alister Hardy suggested this hypothesis in 1960 in an attempt to account for several human characteristics that are unique among primates but common in aquatic mammals. Some of these are: position of fetal hair, loss of body hair, subcutaneous fat, face-to ... face copulation, weeping, etc. The combination of hairlessness and subcutaneous fat seems almost totally confined to aquatic mammals and humans. Two other characteristics are covered in some depth in this article: The discovery that some prehistoric shell middens consist of deep-water shellfish, which must be the result of breath-held diving. This human skill, again unique among primates, is obviously quite ancient. Furthermore, recent experiments suggest that in humans, in addition to seals and ducks, vascular constriction is not limited to the arterioles but ... to the larger arteries, too. This indicates some degree of specialized adaptation to a diving life. Most animals with a sodium deficiency display an active craving for salt which, when satisfied, disappears. In humans, salt intake has little or no relation to the body's needs. Some Inuit tribes avoid salt almost completely, while people in the Western world consume 1520 times the amount needed for health. In other works, a single African species (assuming humans have an African origin) possesses a wildly different scheme of ...

... Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects When The Edges Of The Continents Were Naked Sea-level curves off the British Columbia coast versus time. (Left) Dashed curve in calendar years. (Right) Curves based on radiocarbon measurements. The aquatic-ape hypothesis may or may not hold water, but modern sonar undersea imaging and sampling reveal wide swathes of land that are now drowned that could once have been ideal habitat for water-adapted humans. One of these surveys was conducted offshore of Queen Charlotte ... , Canada. The surveyors discovered extensive post-glacial landscapes suitable for human use now covered by 150 meters (500 feet) of ocean, but which were exposed 10,000-12,000 years ago. In situ tree stumps and shellfish-rich paleobeaches are present on these drowned landscapes. A stone tool encrusted with barnacles and bryozoa were recovered from a drowned delta flood plain now 53 m below mean sea level. This is the first tangible evidence that the subaerial broad banks of the western North American Continental Shelf may ... been occupied by humans in earliest Holocene and possibly late glacial time. (Fedje, Daryl W., and Josenhans, Heiner; "Drowned Forests and Archaeology of the Continental Shelf of British Columbia, Canada," Geology, 28:99, 2000.) Comment. A map in the referenced report reveals that 12,000 years ago broad stretches of land several hundred kilometers wide bordered Canada, Alaska, and Russia. Not only could this exposed land have encouraged entry into the New World (as long-theorized) ...