Moreover, it thus follows that not a great deal of time was needed for the large animals of the three major parts of the world to become known to the people who spent time on the coasts of those regions.
Sentiment: NEGATIVE
Animals arrived, liked the look of the place, took up their quarters, settled down, spread, and flourished. They didn't bother themselves about the past - they never do; they're too busy.
Often extinctions in the ocean occur at the same time as those on land. Then again, the ice age extinctions lost many big animals, but not many sea faring ones.
When I arrived on the planet, there were only two billion. Wildlife was more abundant, we were less so; now the situation is reversed.
We may have charted all the continents on the planet, and we may have discovered all the mammals, but that doesn't mean that there's nothing left to explore on Earth.
Secondly, the nature of the revolutions which have altered the surface of the earth must have had a more decisive effect on the terrestrial quadrupeds than on the marine animals.
The amazing thing about the sea is that it is perhaps the last truly unexplored frontier; most oceanographers estimate that only about ninety-five per cent of the sea has been studied. Meanwhile, the oceans are believed to contain more animals than exist on land, a majority of which have never been discovered.
Why did human development proceed at such different rates on different continents for the last 13,000 years?
Hence the same instant which killed the animals froze the country where they lived. This event was sudden, instantaneous, without any gradual development.
One of the things that's frustrated me as a deep-sea explorer is how many animals there probably are in the ocean that we know nothing about because of the way we explore the ocean.
Long after this wonderful event in the Earth's history, when the human species was spread over a good deal of Asia, Europe, and Africa, migration to the American continents began in attempts to find new feeding grounds and unoccupied areas for hunting and fishing.