https://commons.wikimedia.org/wiki/File:Fucus_serratus_2015-09-08_ag_M0010140.jpg
The first plants to appear on Earth were seaweeds. They showed up around 1000 million years ago, and compared to the single-celled bacteria and blue green algae that first colonised the oceans, these seaweeds were complex organisms, comprising many thousands of cells. Some of these seaweeds were many metres long. They were called algae, which is still around today. That green fish pond that hasn't been cleaned out in years is full of algae - that is what makes the water go green - and when you look into those murky waters be aware that you may be looking at your ancestors.
Stay tuned for more palaeontological facts.
