Radio carbon dating has recently accelerated in degeneration for reasons not understood completely.
It shows that we have no accurate way to date biological materials, and that the rates of decay are not constant.

If you examine the expanding earth theory you will eventually run into this, but more recently it was
mentioned in the ancient alien series.

Making assumptions by using a corrupted science sold
with mirror images of purported laws, as in religion,
is a mockery of logical deduction.

Sometime if you turn things on their head it makes more sense. The sun is ancient, not young as we are told, and it has changed and is undergoing changes as old stars do.

You might do some looking around at the life cycles of stars and notice ours is/has changed from yellow to white.
This isn't good.

As for the underwater forest, we would need some samples to see if these species even exist, or if they date from another epoch, like say from the time of the dinosaurs.