If you could survive in water or dampness during the period of a dark earth in which the sun was blotted out, you didn’t go extinct.  Land animals were what died out and went extinct.  Animals in the water were for the most part unaffected.  Because of that, the evolution theorist--who believes in successive change over time to make the creatures we have today--has to prove that we evolved from the water.  Because almost all land life was dead.  Which presents a problem.  Where is the evidence in strata?  It isn't there.  We have dinosaurs in strata...then we have millions of years of nothing.  No successive life forms showing change over time.  They just aren't there.

Evolution is just a word for change.  Evolution Theory, however, is an entirely different ball game.  Evolution theory (simplified) says that one atom connected to another and began to divide.  (Where did those two atoms come from?) And somewhere along the way their connections became “alive.” And "evolved" and became more and more functional and branched off--and every single living thing on earth comes from those two original dead atoms that became alive by magic. 

One of the laws of Physics refutes the idea that things get better and better--and more functional over time.  Physics tells us that things get worse over time.  It's called Entropy.  Described as "A lack of order or predictability; gradual decline into disorder."  To evolve into a better creature from almost nothing at all means that you must refute this law billions upon billions  of times.  Which is "Physically" impossible.  We didn't evolve.