whatever:
Coragyps, However they reproduce, its interesting they are found all over the earth, thus their dispersement is related in some way to the waters, or they wouldn't beable to spread around the earth, etc...
Coral animals reproduce by squirting eggs and sperm into the water around them. The sperm then finds the eggs, and the eggs hatch into swimming "planula" larvae that look like flattened blobs. These larvae then feed and search for some good place to become an adult coral animal.
Such swimming larvae are common among marine invertebrates, check out this
gallery of larvae. Note how different they look from their adults. A nauplius (crustacean larva) looks vaguely like a tiny shrimp, but the others...
... if this hydrologic water cycle existed for billions of years, even the sea spray washes back into the oceans, so why is the oceans only 3.6 % mineral salts, for it should be a whole lot more salt, as all salts dilute into the sea.
There are processes that remove minerals froms seawater.
(stratified oceans...)
This does not seem like some raging flood.
(a lot of stuff about adapting to different salinities...)
Except that many sea animals are not nearly so adaptable. Fish are sometimes called "osmoregulators", because they actively regulate their bodies' osmotic pressure, meaning that some fish can go between fresh and salt water without trouble. But even then, many fish get "spoiled", becoming adapted to some osmotic pressure, such as that of typical freshwater or typical saltwater.
Many marine invertebrates are even worse -- their bodies' osmotic pressure tracks that of the surrounding seawater, making them "osmoconformers". They are thus vulnerable to salinity changes. This may be why there are no freshwater echinoderms; it may be too difficult for them to cope with the lowered salinity.
P.S. The bible says the earth was void and without form kjv genesis 1:2, sounds a bit like Europa, a small frozen moon of Jupiter, void and without form, granted its much smaller than the earth,
Except that it looks like it has plenty of "form" to me.