You do understand that, it was a human says he was writing the words of God? Pretty much makes anything written down open for debate. So, science can not explain everything. The bible has been modified over the years of its writing. Again, you prove my point. Plus, your God is young compared to the rest of history's God's. As for Dolphins yes they do have a language far more complexes than humans. Most creatures in this planet that have vocal cords are able to create and learn sounds. Ugh... This is basic biology.