I had intended this to be funny, but as I looked more into it, all I found at first was Christian nonsense. So I’ll just start out by saying: Congratulations religious folk, you have completely missed the point. I hope you’ll trust science over your religious leaders for this one.
Back to business.
Radiocarbon dating uses the half-life of carbon-14 to determine the approximate age of biological artifacts. When it comes to marine organisms, however, it often fails dismally. For example, living penguins have been dated 8,000 years old.
This is only half of the story I’m about to tell you, but this small fact has been one of the things creationists cling to in order to completely discredit radiocarbon dating as a scientific technique.
Now for some (real) science.
Radiocarbon dating only works if the organism has gotten its carbon (in the form of CO2) from the atmosphere. This of course rules out marine and other aquatic organisms, where CO2 comes from dissolved carbonate rocks. The carbon from the rock is much older than the carbon in the atmosphere, and hasn’t had a chance to mix with the younger carbon sources to replenish the levels of 14C. This means that a living penguin may have a radiocarbon date of 8,000 years, proving this technique is situationally unreliable, but no such phenomenon occurs when dating wood. The error extends to organisms that incorporate marine life as part of their diet, as well.
The National Center for Science Education has a wonderful webpage addressing this issue.
I would also like to mention that vampirepenguins.com is a real thing, and I thank them for the above picture.