"Algae — they are ancient. They go back in time long before there were dinosaurs, before there were fish. We’re talking half a billion years ago [these algae arose], and they are still in reasonably unchanged form. Some are the green algae that form a calcareous matrix that enables them to be preserved as fossils, others are soft and haven’t been retained." @dr.sylviaearle for @smithsonianmagazine on her career with seaweed - read the full article through the link in our bio! 🌿 📸 NOAA Photo Library 📸 Danielle Olson / NMNH 📸 Emma Saaty / NMNH