«Consequently, if my theory be true, it is indisputable that before the lowest Silurian stratum was deposited, long periods elapsed, as long as, or probably far longer than, the whole interval from the Silurian age to the present day; and that during these vast, yet quite unknown, periods
of time, the world
swarmed with
living creatures.
Both are home to
swarms of fish with brilliant colors, fascinating sea
creatures like sea turtles, lemon sharks, and even manatees, and other amazing aquatic
life.