scientific theories taught as factual

Hi, fannyfresh. Welcome to EvC.To answer your question, the evidence seems to indicate that it is indeed a fact that all known species have descended from a single common ancestral species through natural selection acting on randomly occurring variations.I hope this helps.

---

In many respects, the Bible was the world's first Wikipedia article. -- Doug Brown (quoted by Carlin Romano in The Chronicle Review)

You're in luck! Mudskippers seem to fit the bill nicely, here!- You're absolutely right! Mudskippers can't walk as well as a land animal, nor can they swim as well as other fish. Yet, they seem to be doing pretty well.

---

"The guilty one is not he who commits the sin, but the one who causes the darkness."
Clearly, he had his own strange way of judging things. I suspect that he acquired it from the Gospels. -- Victor Hugo

Dear jrtjr1, You didn't understand the point. Heck, you don't even understand the point you are trying to make.You claimed that there could not have been a transitional between land animals and fish because the transitional wouldn't be able to swim or to walk. I just showed that this is not true. A fish could survive on the boundary of land and sea, and could have adaptations to its fins that allows it to "walk" after a fashion.

---

"The guilty one is not he who commits the sin, but the one who causes the darkness."
Clearly, he had his own strange way of judging things. I suspect that he acquired it from the Gospels. -- Victor Hugo