There is plenty of evidence that fish crawled out of the water and evolved into land animals, some of which then returned to the water and eventually evolved, for example, into dolphins and whales (which are not fish but mammals!). And, as mentioned in the article, birds evolved from dinosaurs. A visit to a good museum of natural history will show you much of this evidence.
There is plenty of evidence that fish crawled out of the water and evolved into land animals, some of which then returned to the water and eventually evolved, for example, into dolphins and whales (which are not fish but mammals!). And, as mentioned in the article, birds evolved from dinosaurs. A visit to a good museum of natural history will show you much of this evidence.